Mercurial > dovecot > original-hg > dovecot-1.2
annotate src/master/login-process.c @ 2046:6ae973f60f43 HEAD
logging cleanups.
author | Timo Sirainen <tss@iki.fi> |
---|---|
date | Sun, 23 May 2004 22:23:57 +0300 |
parents | c7c19f5071c3 |
children | 4e77cb0aff21 |
rev | line source |
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0 | 1 /* Copyright (C) 2002 Timo Sirainen */ |
2 | |
3 #include "common.h" | |
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4 #include "ioloop.h" |
0 | 5 #include "network.h" |
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6 #include "ostream.h" |
0 | 7 #include "fdpass.h" |
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8 #include "fd-close-on-exec.h" |
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9 #include "env-util.h" |
0 | 10 #include "restrict-access.h" |
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11 #include "restrict-process-size.h" |
0 | 12 #include "login-process.h" |
13 #include "auth-process.h" | |
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14 #include "mail-process.h" |
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15 #include "master-login-interface.h" |
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16 #include "log.h" |
0 | 17 |
18 #include <unistd.h> | |
19 #include <syslog.h> | |
20 | |
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21 struct login_process { |
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22 struct login_group *group; |
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23 struct login_process *prev_nonlisten, *next_nonlisten; |
0 | 24 int refcount; |
25 | |
26 pid_t pid; | |
27 int fd; | |
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28 struct io *io; |
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29 struct ostream *output; |
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30 unsigned int initialized:1; |
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31 unsigned int listening:1; |
0 | 32 unsigned int destroyed:1; |
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33 }; |
0 | 34 |
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35 struct login_auth_request { |
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36 struct login_process *process; |
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37 unsigned int tag; |
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38 |
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39 unsigned int login_tag; |
0 | 40 int fd; |
41 | |
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42 struct ip_addr ip; |
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43 }; |
0 | 44 |
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45 static unsigned int auth_id_counter, login_pid_counter; |
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46 static struct timeout *to; |
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47 static struct io *io_listen; |
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48 |
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49 static struct hash_table *processes; |
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50 static struct login_group *login_groups; |
0 | 51 |
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52 static void login_process_destroy(struct login_process *p); |
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53 static void login_process_unref(struct login_process *p); |
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54 static int login_process_init_group(struct login_process *p); |
0 | 55 |
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56 static void login_group_create(struct settings *set) |
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57 { |
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58 struct login_group *group; |
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59 |
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60 group = i_new(struct login_group, 1); |
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61 group->set = set; |
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62 group->process_type = set->protocol == MAIL_PROTOCOL_IMAP ? |
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63 PROCESS_TYPE_IMAP : PROCESS_TYPE_POP3; |
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64 |
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65 group->next = login_groups; |
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66 login_groups = group; |
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67 } |
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68 |
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69 static void login_group_destroy(struct login_group *group) |
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70 { |
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71 i_free(group); |
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72 } |
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73 |
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74 void auth_master_callback(struct auth_master_reply *reply, |
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75 const unsigned char *data, void *context) |
0 | 76 { |
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77 struct login_auth_request *request = context; |
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78 struct master_login_reply master_reply; |
0 | 79 |
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80 if (reply == NULL || !reply->success) |
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81 master_reply.success = FALSE; |
0 | 82 else { |
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83 struct login_group *group = request->process->group; |
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84 |
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85 master_reply.success = |
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86 create_mail_process(group, request->fd, &request->ip, |
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87 reply, (const char *) data); |
0 | 88 } |
89 | |
90 /* reply to login */ | |
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91 master_reply.tag = request->login_tag; |
0 | 92 |
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93 if (o_stream_send(request->process->output, &master_reply, |
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94 sizeof(master_reply)) < 0) |
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95 login_process_destroy(request->process); |
0 | 96 |
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97 if (close(request->fd) < 0) |
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98 i_error("close(mail client) failed: %m"); |
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99 login_process_unref(request->process); |
0 | 100 i_free(request); |
101 } | |
102 | |
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103 static void login_process_mark_nonlistening(struct login_process *p) |
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104 { |
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105 if (!p->listening) { |
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106 i_error("login: received another \"not listening\" " |
1338 | 107 "notification (if you can't login at all, " |
108 "see src/lib/fdpass.c)"); | |
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109 return; |
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110 } |
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111 |
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112 p->listening = FALSE; |
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113 |
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114 if (p->group != NULL) { |
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115 p->group->listening_processes--; |
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116 p->prev_nonlisten = p->group->newest_nonlisten_process; |
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117 |
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118 if (p->group->newest_nonlisten_process != NULL) |
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119 p->group->newest_nonlisten_process->next_nonlisten = p; |
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120 p->group->newest_nonlisten_process = p; |
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121 |
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122 if (p->group->oldest_nonlisten_process == NULL) |
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123 p->group->oldest_nonlisten_process = p; |
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124 } |
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125 } |
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126 |
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127 static void login_process_groups_create(void) |
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128 { |
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129 struct server_settings *server; |
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130 |
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131 for (server = settings_root; server != NULL; server = server->next) { |
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132 if (server->imap != NULL) |
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133 login_group_create(server->imap); |
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134 if (server->pop3 != NULL) |
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135 login_group_create(server->pop3); |
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136 } |
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137 } |
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138 |
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139 static struct login_group * |
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140 login_group_process_find(const char *name, enum mail_protocol protocol) |
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141 { |
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142 struct login_group *group; |
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143 |
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144 if (login_groups == NULL) |
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145 login_process_groups_create(); |
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146 |
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147 for (group = login_groups; group != NULL; group = group->next) { |
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148 if (strcmp(group->set->server->name, name) == 0 && |
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149 group->set->protocol == protocol) |
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150 return group; |
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151 } |
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152 |
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153 return NULL; |
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154 } |
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155 |
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156 static int login_process_read_group(struct login_process *p) |
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157 { |
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158 struct login_group *group; |
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159 const char *name, *proto; |
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160 char buf[256]; |
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161 enum mail_protocol protocol; |
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162 unsigned int len; |
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163 ssize_t ret; |
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164 |
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165 /* read length */ |
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166 ret = read(p->fd, buf, 1); |
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167 if (ret != 1) |
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168 len = 0; |
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169 else { |
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170 len = buf[0]; |
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171 if (len >= sizeof(buf)) { |
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172 i_error("login: Server name length too large"); |
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173 return FALSE; |
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174 } |
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175 |
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176 ret = read(p->fd, buf, len); |
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177 } |
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178 |
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179 if (ret < 0) |
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180 i_error("login: read() failed: %m"); |
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181 else if (len == 0 || (size_t)ret != len) |
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182 i_error("login: Server name wasn't sent"); |
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183 else { |
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184 name = t_strndup(buf, len); |
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185 proto = strchr(buf, '/'); |
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186 if (proto == NULL) { |
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187 i_error("login: Missing protocol from server name '%s'", |
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188 name); |
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189 return FALSE; |
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190 } |
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191 name = t_strdup_until(buf, proto++); |
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192 |
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193 if (strcmp(proto, "imap") == 0) |
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194 protocol = MAIL_PROTOCOL_IMAP; |
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195 else if (strcmp(proto, "pop3") == 0) |
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196 protocol = MAIL_PROTOCOL_IMAP; |
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197 else { |
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198 i_error("login: Unknown protocol '%s'", proto); |
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199 return FALSE; |
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200 } |
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201 |
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202 group = login_group_process_find(name, protocol); |
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203 if (group == NULL) { |
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204 i_error("login: Unknown server name '%s'", name); |
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205 return FALSE; |
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206 } |
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207 |
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208 p->group = group; |
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209 return login_process_init_group(p); |
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210 } |
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211 return FALSE; |
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212 } |
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213 |
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214 static void login_process_input(void *context) |
0 | 215 { |
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216 struct login_process *p = context; |
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217 struct auth_process *auth_process; |
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218 struct login_auth_request *authreq; |
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219 struct master_login_request req; |
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220 int client_fd; |
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221 ssize_t ret; |
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222 |
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223 if (p->group == NULL) { |
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224 /* we want to read the group */ |
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225 if (!login_process_read_group(p)) |
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226 login_process_destroy(p); |
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227 return; |
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228 } |
0 | 229 |
230 ret = fd_read(p->fd, &req, sizeof(req), &client_fd); | |
231 if (ret != sizeof(req)) { | |
232 if (ret == 0) { | |
233 /* disconnected, ie. the login process died */ | |
234 } else if (ret > 0) { | |
235 /* req wasn't fully read */ | |
236 i_error("login: fd_read() couldn't read all req"); | |
237 } else { | |
238 i_error("login: fd_read() failed: %m"); | |
239 } | |
240 | |
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241 if (client_fd != -1) { |
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242 if (close(client_fd) < 0) |
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243 i_error("close(mail client) failed: %m"); |
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244 } |
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245 |
0 | 246 login_process_destroy(p); |
247 return; | |
248 } | |
249 | |
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250 if (client_fd == -1) { |
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251 /* just a notification that the login process */ |
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252 if (!p->initialized) { |
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253 /* initialization notify */ |
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254 p->initialized = TRUE;; |
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255 } else { |
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256 /* not listening for new connections anymore */ |
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257 login_process_mark_nonlistening(p); |
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258 } |
613
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259 return; |
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260 } |
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261 |
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262 fd_close_on_exec(client_fd, TRUE); |
0 | 263 |
264 /* ask the cookie from the auth process */ | |
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265 authreq = i_new(struct login_auth_request, 1); |
0 | 266 p->refcount++; |
267 authreq->process = p; | |
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268 authreq->tag = ++auth_id_counter; |
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269 authreq->login_tag = req.tag; |
0 | 270 authreq->fd = client_fd; |
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271 authreq->ip = req.ip; |
0 | 272 |
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273 auth_process = auth_process_find(req.auth_pid); |
0 | 274 if (auth_process == NULL) { |
275 i_error("login: Authentication process %u doesn't exist", | |
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276 req.auth_pid); |
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277 auth_master_callback(NULL, NULL, authreq); |
0 | 278 } else { |
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279 auth_process_request(auth_process, p->pid, |
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280 req.auth_id, authreq); |
0 | 281 } |
282 } | |
283 | |
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284 static struct login_process * |
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285 login_process_new(struct login_group *group, pid_t pid, int fd) |
0 | 286 { |
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287 struct login_process *p; |
0 | 288 |
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289 i_assert(pid != 0); |
0 | 290 |
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291 p = i_new(struct login_process, 1); |
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292 p->group = group; |
0 | 293 p->refcount = 1; |
294 p->pid = pid; | |
295 p->fd = fd; | |
613
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296 p->listening = TRUE; |
0 | 297 p->io = io_add(fd, IO_READ, login_process_input, p); |
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298 p->output = o_stream_create_file(fd, default_pool, |
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299 sizeof(struct master_login_reply)*10, |
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300 FALSE); |
0 | 301 |
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302 PID_ADD_PROCESS_TYPE(pid, PROCESS_TYPE_LOGIN); |
195
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303 hash_insert(processes, POINTER_CAST(pid), p); |
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304 |
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305 if (p->group != NULL) { |
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306 p->group->processes++; |
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307 p->group->listening_processes++; |
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308 } |
0 | 309 return p; |
310 } | |
311 | |
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312 static void login_process_remove_from_lists(struct login_process *p) |
613
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313 { |
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314 if (p->group == NULL) |
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315 return; |
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316 |
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317 if (p == p->group->oldest_nonlisten_process) |
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318 p->group->oldest_nonlisten_process = p->next_nonlisten; |
613
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319 else |
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320 p->prev_nonlisten->next_nonlisten = p->next_nonlisten; |
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321 |
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322 if (p == p->group->newest_nonlisten_process) |
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323 p->group->newest_nonlisten_process = p->prev_nonlisten; |
613
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324 else |
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325 p->next_nonlisten->prev_nonlisten = p->prev_nonlisten; |
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326 |
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327 p->next_nonlisten = p->prev_nonlisten = NULL; |
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328 } |
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329 |
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330 static void login_process_destroy(struct login_process *p) |
0 | 331 { |
332 if (p->destroyed) | |
333 return; | |
334 p->destroyed = TRUE; | |
335 | |
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336 if (!p->initialized && io_loop_is_running(ioloop)) { |
1000
0fbafade2d85
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337 i_error("Login process died too early - shutting down"); |
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338 io_loop_stop(ioloop); |
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339 } |
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340 |
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341 if (p->listening && p->group != NULL) |
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342 p->group->listening_processes--; |
613
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Finally support for handling each login connection in it's own process.
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343 |
764
f57c52738f90
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344 o_stream_close(p->output); |
0 | 345 io_remove(p->io); |
805
5ac361acb316
Marked all non-trivial buffer modifications with @UNSAFE tag. Several
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diff
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346 if (close(p->fd) < 0) |
5ac361acb316
Marked all non-trivial buffer modifications with @UNSAFE tag. Several
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diff
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|
347 i_error("close(login) failed: %m"); |
0 | 348 |
613
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Finally support for handling each login connection in it's own process.
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diff
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|
349 if (!p->listening) |
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Finally support for handling each login connection in it's own process.
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350 login_process_remove_from_lists(p); |
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351 |
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352 if (p->group != NULL) |
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353 p->group->processes--; |
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354 |
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355 if (p->pid != 0) |
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356 hash_remove(processes, POINTER_CAST(p->pid)); |
613
1906116a62ce
Finally support for handling each login connection in it's own process.
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diff
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|
357 |
0 | 358 login_process_unref(p); |
359 } | |
360 | |
903
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|
361 static void login_process_unref(struct login_process *p) |
0 | 362 { |
363 if (--p->refcount > 0) | |
364 return; | |
365 | |
764
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|
366 o_stream_unref(p->output); |
0 | 367 i_free(p); |
368 } | |
369 | |
1273
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370 static void login_process_init_env(struct login_group *group, pid_t pid) |
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371 { |
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|
372 struct settings *set = group->set; |
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373 |
2000
c7c19f5071c3
Write all logging through master process. Fixes problems with log rotation,
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|
374 child_process_init_env(); |
1273
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375 |
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|
376 /* setup access environment - needs to be done after |
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|
377 clean_child_process() since it clears environment */ |
1724
b3526668de78
Make sure auth process and login process don't share uids.
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parents:
1610
diff
changeset
|
378 restrict_access_set_env(set->login_user, set->login_uid, |
b3526668de78
Make sure auth process and login process don't share uids.
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1610
diff
changeset
|
379 set->server->login_gid, |
1506
e7c627bacaaf
Allow first_valid_gid to be 0. Drop any supplementary groups not in valid
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1499
diff
changeset
|
380 set->login_chroot ? set->login_dir : NULL, |
e7c627bacaaf
Allow first_valid_gid to be 0. Drop any supplementary groups not in valid
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diff
changeset
|
381 0, 0); |
1273
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382 |
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|
383 env_put("DOVECOT_MASTER=1"); |
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diff
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|
384 |
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|
385 if (!set->ssl_disable) { |
1907
190f1d315ce6
Added setting ssl_ca_file, patch by Zach Bagnall
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diff
changeset
|
386 if (set->ssl_ca_file != NULL) { |
190f1d315ce6
Added setting ssl_ca_file, patch by Zach Bagnall
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diff
changeset
|
387 env_put(t_strconcat("SSL_CA_FILE=", |
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Added setting ssl_ca_file, patch by Zach Bagnall
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diff
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|
388 set->ssl_ca_file, NULL)); |
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Added setting ssl_ca_file, patch by Zach Bagnall
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|
389 } |
1273
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390 env_put(t_strconcat("SSL_CERT_FILE=", |
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|
391 set->ssl_cert_file, NULL)); |
1610
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diff
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|
392 env_put(t_strconcat("SSL_KEY_FILE=", |
6850142c4e25
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diff
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|
393 set->ssl_key_file, NULL)); |
1273
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|
394 env_put(t_strconcat("SSL_PARAM_FILE=", |
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|
395 set->ssl_parameters_file, NULL)); |
1996 | 396 if (set->ssl_cipher_list != NULL) { |
397 env_put(t_strconcat("SSL_CIPHER_LIST=", | |
398 set->ssl_cipher_list, NULL)); | |
399 } | |
1997
1d0985f6bdd9
Added ssl_verify_client_cert setting.
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1996
diff
changeset
|
400 if (set->ssl_verify_client_cert) |
1d0985f6bdd9
Added ssl_verify_client_cert setting.
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1996
diff
changeset
|
401 env_put("SSL_VERIFY_CLIENT_CERT=1"); |
1273
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|
402 } |
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|
403 |
2cf2e08a6ee9
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diff
changeset
|
404 if (set->disable_plaintext_auth) |
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|
405 env_put("DISABLE_PLAINTEXT_AUTH=1"); |
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diff
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|
406 if (set->verbose_proctitle) |
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diff
changeset
|
407 env_put("VERBOSE_PROCTITLE=1"); |
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diff
changeset
|
408 if (set->verbose_ssl) |
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diff
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|
409 env_put("VERBOSE_SSL=1"); |
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diff
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|
410 |
1610
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
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diff
changeset
|
411 if (set->login_process_per_connection) { |
1273
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diff
changeset
|
412 env_put("PROCESS_PER_CONNECTION=1"); |
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|
413 env_put("MAX_LOGGING_USERS=1"); |
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|
414 } else { |
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changeset
|
415 env_put(t_strdup_printf("MAX_LOGGING_USERS=%u", |
1610
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
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diff
changeset
|
416 set->login_max_logging_users)); |
1273
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|
417 } |
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|
418 |
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|
419 env_put(t_strdup_printf("PROCESS_UID=%s", dec2str(pid))); |
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|
420 } |
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|
421 |
1055
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
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diff
changeset
|
422 static pid_t create_login_process(struct login_group *group) |
0 | 423 { |
1055
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
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1039
diff
changeset
|
424 static const char *argv[] = { NULL, NULL }; |
2046 | 425 struct log_io *log; |
2000
c7c19f5071c3
Write all logging through master process. Fixes problems with log rotation,
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parents:
1997
diff
changeset
|
426 const char *prefix; |
0 | 427 pid_t pid; |
2000
c7c19f5071c3
Write all logging through master process. Fixes problems with log rotation,
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parents:
1997
diff
changeset
|
428 int fd[2], log_fd; |
0 | 429 |
1610
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
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430 if (group->set->login_process_per_connection && |
1055
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
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431 group->processes - group->listening_processes >= |
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New configuration file code. Some syntax changes, but tries to be somewhat
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432 group->set->login_max_logging_users) { |
1055
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Rewrote setting handling. Changed some existing settings also since POP3
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433 if (group->oldest_nonlisten_process != NULL) |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
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|
434 login_process_destroy(group->oldest_nonlisten_process); |
613
1906116a62ce
Finally support for handling each login connection in it's own process.
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diff
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|
435 } |
1906116a62ce
Finally support for handling each login connection in it's own process.
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diff
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|
436 |
1610
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
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|
437 if (group->set->login_uid == 0) |
0 | 438 i_fatal("Login process must not run as root"); |
439 | |
440 /* create communication to process with a socket pair */ | |
2000
c7c19f5071c3
Write all logging through master process. Fixes problems with log rotation,
Timo Sirainen <tss@iki.fi>
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1997
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|
441 if (socketpair(AF_UNIX, SOCK_STREAM, 0, fd) < 0) { |
0 | 442 i_error("socketpair() failed: %m"); |
443 return -1; | |
444 } | |
445 | |
2046 | 446 log_fd = log_create_pipe(&log); |
2000
c7c19f5071c3
Write all logging through master process. Fixes problems with log rotation,
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parents:
1997
diff
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|
447 if (log_fd < 0) |
c7c19f5071c3
Write all logging through master process. Fixes problems with log rotation,
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1997
diff
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|
448 pid = -1; |
c7c19f5071c3
Write all logging through master process. Fixes problems with log rotation,
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1997
diff
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|
449 else { |
c7c19f5071c3
Write all logging through master process. Fixes problems with log rotation,
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parents:
1997
diff
changeset
|
450 pid = fork(); |
c7c19f5071c3
Write all logging through master process. Fixes problems with log rotation,
Timo Sirainen <tss@iki.fi>
parents:
1997
diff
changeset
|
451 if (pid < 0) |
c7c19f5071c3
Write all logging through master process. Fixes problems with log rotation,
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parents:
1997
diff
changeset
|
452 i_error("fork() failed: %m"); |
c7c19f5071c3
Write all logging through master process. Fixes problems with log rotation,
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1997
diff
changeset
|
453 } |
c7c19f5071c3
Write all logging through master process. Fixes problems with log rotation,
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diff
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|
454 |
0 | 455 if (pid < 0) { |
456 (void)close(fd[0]); | |
457 (void)close(fd[1]); | |
2000
c7c19f5071c3
Write all logging through master process. Fixes problems with log rotation,
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diff
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|
458 (void)close(log_fd); |
0 | 459 return -1; |
460 } | |
461 | |
462 if (pid != 0) { | |
463 /* master */ | |
2046 | 464 prefix = t_strdup_printf("%s-login: ", |
465 process_names[group->process_type]); | |
466 log_set_prefix(log, prefix); | |
467 | |
1273
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Somewhat working code to support loading Dovecot from inetd and such. It
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diff
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|
468 net_set_nonblock(fd[0], TRUE); |
727
8dd8ebe6bcac
We use close-on-exec flag now to make sure that master process closes the
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722
diff
changeset
|
469 fd_close_on_exec(fd[0], TRUE); |
1273
2cf2e08a6ee9
Somewhat working code to support loading Dovecot from inetd and such. It
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diff
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|
470 (void)login_process_new(group, pid, fd[0]); |
0 | 471 (void)close(fd[1]); |
2000
c7c19f5071c3
Write all logging through master process. Fixes problems with log rotation,
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|
472 (void)close(log_fd); |
0 | 473 return pid; |
474 } | |
475 | |
2046 | 476 prefix = t_strdup_printf("master-%s-login: ", |
477 process_names[group->process_type]); | |
478 log_set_prefix(log, prefix); | |
479 | |
0 | 480 /* move the listen handle */ |
1610
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New configuration file code. Some syntax changes, but tries to be somewhat
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481 if (dup2(group->set->listen_fd, LOGIN_LISTEN_FD) < 0) |
2046 | 482 i_fatal("dup2(listen_fd) failed: %m"); |
1055
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Rewrote setting handling. Changed some existing settings also since POP3
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|
483 fd_close_on_exec(LOGIN_LISTEN_FD, FALSE); |
0 | 484 |
485 /* move the SSL listen handle */ | |
1610
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New configuration file code. Some syntax changes, but tries to be somewhat
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486 if (dup2(group->set->ssl_listen_fd, LOGIN_SSL_LISTEN_FD) < 0) |
2046 | 487 i_fatal("dup2(ssl_listen_fd) failed: %m"); |
1055
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Rewrote setting handling. Changed some existing settings also since POP3
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|
488 fd_close_on_exec(LOGIN_SSL_LISTEN_FD, FALSE); |
0 | 489 |
1273
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Somewhat working code to support loading Dovecot from inetd and such. It
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changeset
|
490 /* move communication handle */ |
2cf2e08a6ee9
Somewhat working code to support loading Dovecot from inetd and such. It
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diff
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|
491 if (dup2(fd[1], LOGIN_MASTER_SOCKET_FD) < 0) |
2046 | 492 i_fatal("dup2(master) failed: %m"); |
1273
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Somewhat working code to support loading Dovecot from inetd and such. It
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|
493 fd_close_on_exec(LOGIN_MASTER_SOCKET_FD, FALSE); |
0 | 494 |
2000
c7c19f5071c3
Write all logging through master process. Fixes problems with log rotation,
Timo Sirainen <tss@iki.fi>
parents:
1997
diff
changeset
|
495 if (dup2(log_fd, 2) < 0) |
2046 | 496 i_fatal("dup2(stderr) failed: %m"); |
2000
c7c19f5071c3
Write all logging through master process. Fixes problems with log rotation,
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parents:
1997
diff
changeset
|
497 fd_close_on_exec(2, FALSE); |
c7c19f5071c3
Write all logging through master process. Fixes problems with log rotation,
Timo Sirainen <tss@iki.fi>
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1997
diff
changeset
|
498 |
0 | 499 (void)close(fd[0]); |
500 (void)close(fd[1]); | |
501 | |
1273
2cf2e08a6ee9
Somewhat working code to support loading Dovecot from inetd and such. It
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parents:
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diff
changeset
|
502 login_process_init_env(group, getpid()); |
0 | 503 |
1610
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
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diff
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|
504 if (!group->set->login_chroot) { |
0 | 505 /* no chrooting, but still change to the directory */ |
1610
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
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diff
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|
506 if (chdir(group->set->login_dir) < 0) { |
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
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changeset
|
507 i_fatal("chdir(%s) failed: %m", |
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
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|
508 group->set->login_dir); |
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
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|
509 } |
0 | 510 } |
511 | |
1610
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
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1506
diff
changeset
|
512 restrict_process_size(group->set->login_process_size, (unsigned int)-1); |
722
0438621d25ff
Added virtual memory size limits to processes. Default values are pretty
Timo Sirainen <tss@iki.fi>
parents:
699
diff
changeset
|
513 |
801
86224ff16bf6
Drop root privileges earlier. Close syslog more later in imap-master when
Timo Sirainen <tss@iki.fi>
parents:
791
diff
changeset
|
514 /* make sure we don't leak syslog fd, but do it last so that |
86224ff16bf6
Drop root privileges earlier. Close syslog more later in imap-master when
Timo Sirainen <tss@iki.fi>
parents:
791
diff
changeset
|
515 any errors above will be logged */ |
86224ff16bf6
Drop root privileges earlier. Close syslog more later in imap-master when
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parents:
791
diff
changeset
|
516 closelog(); |
86224ff16bf6
Drop root privileges earlier. Close syslog more later in imap-master when
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diff
changeset
|
517 |
0 | 518 /* hide the path, it's ugly */ |
1610
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
Timo Sirainen <tss@iki.fi>
parents:
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diff
changeset
|
519 argv[0] = strrchr(group->set->login_executable, '/'); |
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
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parents:
1506
diff
changeset
|
520 if (argv[0] == NULL) |
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
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parents:
1506
diff
changeset
|
521 argv[0] = group->set->login_executable; |
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
Timo Sirainen <tss@iki.fi>
parents:
1506
diff
changeset
|
522 else |
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
Timo Sirainen <tss@iki.fi>
parents:
1506
diff
changeset
|
523 argv[0]++; |
0 | 524 |
1610
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
Timo Sirainen <tss@iki.fi>
parents:
1506
diff
changeset
|
525 execv(group->set->login_executable, (char **) argv); |
0 | 526 |
1441
a83ce8395316
If exec() fails, show the full path rather than argv[0]
Timo Sirainen <tss@iki.fi>
parents:
1398
diff
changeset
|
527 i_fatal_status(FATAL_EXEC, "execv(%s) failed: %m", |
1610
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
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diff
changeset
|
528 group->set->login_executable); |
0 | 529 return -1; |
530 } | |
531 | |
1055
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
532 void login_process_abormal_exit(pid_t pid) |
615
0d852af6842e
Master process generates DH/RSA parameters now and stores them into file
Timo Sirainen <tss@iki.fi>
parents:
614
diff
changeset
|
533 { |
1055
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
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parents:
1039
diff
changeset
|
534 struct login_process *p; |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
535 |
615
0d852af6842e
Master process generates DH/RSA parameters now and stores them into file
Timo Sirainen <tss@iki.fi>
parents:
614
diff
changeset
|
536 /* don't start raising the process count if they're dying all |
0d852af6842e
Master process generates DH/RSA parameters now and stores them into file
Timo Sirainen <tss@iki.fi>
parents:
614
diff
changeset
|
537 the time */ |
1055
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
538 p = hash_lookup(processes, POINTER_CAST(pid)); |
1275
af685269ead0
login: Wait until we're connected to auth process before executing command
Timo Sirainen <tss@iki.fi>
parents:
1273
diff
changeset
|
539 if (p != NULL && p->group != NULL) |
1055
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
540 p->group->wanted_processes_count = 0; |
615
0d852af6842e
Master process generates DH/RSA parameters now and stores them into file
Timo Sirainen <tss@iki.fi>
parents:
614
diff
changeset
|
541 } |
0d852af6842e
Master process generates DH/RSA parameters now and stores them into file
Timo Sirainen <tss@iki.fi>
parents:
614
diff
changeset
|
542 |
635
90a65c017bf0
SIGHUP reloads now settings. Logged in clients are left untouched, but
Timo Sirainen <tss@iki.fi>
parents:
615
diff
changeset
|
543 void login_processes_destroy_all(void) |
90a65c017bf0
SIGHUP reloads now settings. Logged in clients are left untouched, but
Timo Sirainen <tss@iki.fi>
parents:
615
diff
changeset
|
544 { |
1897
1e6ed8045f2b
Changed hash_foreach() to iterator.
Timo Sirainen <tss@iki.fi>
parents:
1724
diff
changeset
|
545 struct hash_iterate_context *iter; |
1e6ed8045f2b
Changed hash_foreach() to iterator.
Timo Sirainen <tss@iki.fi>
parents:
1724
diff
changeset
|
546 void *key, *value; |
1e6ed8045f2b
Changed hash_foreach() to iterator.
Timo Sirainen <tss@iki.fi>
parents:
1724
diff
changeset
|
547 |
1e6ed8045f2b
Changed hash_foreach() to iterator.
Timo Sirainen <tss@iki.fi>
parents:
1724
diff
changeset
|
548 iter = hash_iterate_init(processes); |
1e6ed8045f2b
Changed hash_foreach() to iterator.
Timo Sirainen <tss@iki.fi>
parents:
1724
diff
changeset
|
549 while (hash_iterate(iter, &key, &value)) |
1e6ed8045f2b
Changed hash_foreach() to iterator.
Timo Sirainen <tss@iki.fi>
parents:
1724
diff
changeset
|
550 login_process_destroy(value); |
1e6ed8045f2b
Changed hash_foreach() to iterator.
Timo Sirainen <tss@iki.fi>
parents:
1724
diff
changeset
|
551 hash_iterate_deinit(iter); |
635
90a65c017bf0
SIGHUP reloads now settings. Logged in clients are left untouched, but
Timo Sirainen <tss@iki.fi>
parents:
615
diff
changeset
|
552 |
1055
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
553 while (login_groups != NULL) { |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
554 struct login_group *group = login_groups; |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
555 |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
556 login_groups = group->next; |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
557 login_group_destroy(group); |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
558 } |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
559 } |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
560 |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
561 static void login_group_start_missings(struct login_group *group) |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
562 { |
1610
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
Timo Sirainen <tss@iki.fi>
parents:
1506
diff
changeset
|
563 if (!group->set->login_process_per_connection) { |
1055
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
564 /* create max. one process every second, that way if it keeps |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
565 dying all the time we don't eat all cpu with fork()ing. */ |
1610
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
Timo Sirainen <tss@iki.fi>
parents:
1506
diff
changeset
|
566 if (group->listening_processes < |
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
Timo Sirainen <tss@iki.fi>
parents:
1506
diff
changeset
|
567 group->set->login_processes_count) |
1055
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
568 (void)create_login_process(group); |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
569 return; |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
570 } |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
571 |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
572 /* we want to respond fast when multiple clients are connecting |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
573 at once, but we also want to prevent fork-bombing. use the |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
574 same method as apache: check once a second if we need new |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
575 processes. if yes and we've used all the existing processes, |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
576 double their amount (unless we've hit the high limit). |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
577 Then for each second that didn't use all existing processes, |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
578 drop the max. process count by one. */ |
1610
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
Timo Sirainen <tss@iki.fi>
parents:
1506
diff
changeset
|
579 if (group->wanted_processes_count < group->set->login_processes_count) { |
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
Timo Sirainen <tss@iki.fi>
parents:
1506
diff
changeset
|
580 group->wanted_processes_count = |
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
Timo Sirainen <tss@iki.fi>
parents:
1506
diff
changeset
|
581 group->set->login_processes_count; |
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
Timo Sirainen <tss@iki.fi>
parents:
1506
diff
changeset
|
582 } else if (group->listening_processes == 0) |
1055
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
583 group->wanted_processes_count *= 2; |
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584 else if (group->wanted_processes_count > |
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585 group->set->login_processes_count) |
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586 group->wanted_processes_count--; |
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587 |
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588 if (group->wanted_processes_count > |
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589 group->set->login_max_processes_count) { |
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590 group->wanted_processes_count = |
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591 group->set->login_max_processes_count; |
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592 } |
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593 |
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594 while (group->listening_processes < group->wanted_processes_count) |
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595 (void)create_login_process(group); |
635
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596 } |
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597 |
903
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Naming style changes, finally got tired of most of the typedefs. Also the
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598 static void |
1036
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599 login_processes_start_missing(void *context __attr_unused__) |
0 | 600 { |
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601 struct login_group *group; |
614
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602 |
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603 if (login_groups == NULL) |
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604 login_process_groups_create(); |
614
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605 |
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606 for (group = login_groups; group != NULL; group = group->next) |
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607 login_group_start_missings(group); |
0 | 608 } |
609 | |
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610 static int login_process_send_env(struct login_process *p) |
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611 { |
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612 extern char **environ; |
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613 char **env; |
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614 size_t len; |
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615 int ret = 0; |
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616 |
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617 /* this will clear our environment. luckily we don't need it. */ |
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618 login_process_init_env(p->group, p->pid); |
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619 |
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620 for (env = environ; *env != NULL; env++) { |
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621 len = strlen(*env); |
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622 |
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623 if (o_stream_send(p->output, *env, len) != (ssize_t)len || |
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624 o_stream_send(p->output, "\n", 1) != 1) { |
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625 ret = -1; |
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626 break; |
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627 } |
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628 } |
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629 |
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630 if (ret == 0 && o_stream_send(p->output, "\n", 1) != 1) |
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631 ret = -1; |
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632 |
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633 env_clean(); |
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634 return ret; |
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635 } |
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636 |
1275
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637 static int login_process_init_group(struct login_process *p) |
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638 { |
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639 p->group->processes++; |
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640 p->group->listening_processes++; |
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|
641 |
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642 if (login_process_send_env(p) < 0) { |
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643 i_error("login: Couldn't send environment"); |
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|
644 return FALSE; |
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645 } |
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|
646 |
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647 return TRUE; |
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648 } |
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649 |
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650 static void inetd_login_accept(void *context __attr_unused__) |
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651 { |
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652 struct login_process *p; |
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653 int fd; |
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654 |
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655 fd = net_accept(inetd_login_fd, NULL, NULL); |
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656 if (fd < 0) { |
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657 if (fd < -1) |
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658 i_fatal("accept(inetd_login_fd) failed: %m"); |
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659 } else { |
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660 net_set_nonblock(fd, TRUE); |
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661 fd_close_on_exec(fd, TRUE); |
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662 |
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663 p = login_process_new(NULL, ++login_pid_counter, fd); |
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664 p->initialized = TRUE; |
1273
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665 } |
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666 } |
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667 |
0 | 668 void login_processes_init(void) |
669 { | |
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670 auth_id_counter = 0; |
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671 login_pid_counter = 0; |
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|
672 login_groups = NULL; |
613
1906116a62ce
Finally support for handling each login connection in it's own process.
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diff
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|
673 |
945
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Rewrote hash table code, works with less memory now. Also some memory
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|
674 processes = hash_create(default_pool, default_pool, 128, NULL, NULL); |
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675 if (!IS_INETD()) { |
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676 to = timeout_add(1000, login_processes_start_missing, NULL); |
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677 io_listen = NULL; |
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678 } else { |
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679 to = NULL; |
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680 io_listen = io_add(inetd_login_fd, IO_READ, |
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|
681 inetd_login_accept, NULL); |
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682 } |
0 | 683 } |
684 | |
685 void login_processes_deinit(void) | |
686 { | |
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687 if (to != NULL) |
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|
688 timeout_remove(to); |
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689 if (io_listen != NULL) |
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690 io_remove(io_listen); |
0 | 691 |
635
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|
692 login_processes_destroy_all(); |
0 | 693 hash_destroy(processes); |
694 } |