Mercurial > dovecot > original-hg > dovecot-1.2
annotate src/master/login-process.c @ 2097:4e77cb0aff21 HEAD
Added %l, %r and %P variables and mail_log_prefix setting.
author | Timo Sirainen <tss@iki.fi> |
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date | Mon, 31 May 2004 21:04:46 +0300 |
parents | 6ae973f60f43 |
children | 8690d2000e33 |
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 local_ip, remote_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 t_push(); |
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86 master_reply.success = |
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87 create_mail_process(group, request->fd, |
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88 &request->local_ip, |
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89 &request->remote_ip, |
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90 reply, (const char *) data); |
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91 t_pop(); |
0 | 92 } |
93 | |
94 /* reply to login */ | |
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95 master_reply.tag = request->login_tag; |
0 | 96 |
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97 if (o_stream_send(request->process->output, &master_reply, |
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98 sizeof(master_reply)) < 0) |
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99 login_process_destroy(request->process); |
0 | 100 |
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101 if (close(request->fd) < 0) |
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102 i_error("close(mail client) failed: %m"); |
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103 login_process_unref(request->process); |
0 | 104 i_free(request); |
105 } | |
106 | |
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107 static void login_process_mark_nonlistening(struct login_process *p) |
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108 { |
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109 if (!p->listening) { |
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110 i_error("login: received another \"not listening\" " |
1338 | 111 "notification (if you can't login at all, " |
112 "see src/lib/fdpass.c)"); | |
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113 return; |
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114 } |
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115 |
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116 p->listening = FALSE; |
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117 |
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118 if (p->group != NULL) { |
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119 p->group->listening_processes--; |
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120 p->prev_nonlisten = p->group->newest_nonlisten_process; |
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121 |
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122 if (p->group->newest_nonlisten_process != NULL) |
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123 p->group->newest_nonlisten_process->next_nonlisten = p; |
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124 p->group->newest_nonlisten_process = p; |
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125 |
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126 if (p->group->oldest_nonlisten_process == NULL) |
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127 p->group->oldest_nonlisten_process = p; |
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128 } |
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129 } |
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130 |
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131 static void login_process_groups_create(void) |
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132 { |
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133 struct server_settings *server; |
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134 |
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135 for (server = settings_root; server != NULL; server = server->next) { |
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136 if (server->imap != NULL) |
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137 login_group_create(server->imap); |
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138 if (server->pop3 != NULL) |
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139 login_group_create(server->pop3); |
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140 } |
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141 } |
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142 |
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143 static struct login_group * |
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144 login_group_process_find(const char *name, enum mail_protocol protocol) |
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145 { |
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146 struct login_group *group; |
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147 |
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148 if (login_groups == NULL) |
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149 login_process_groups_create(); |
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150 |
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151 for (group = login_groups; group != NULL; group = group->next) { |
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152 if (strcmp(group->set->server->name, name) == 0 && |
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153 group->set->protocol == protocol) |
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154 return group; |
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155 } |
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156 |
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157 return NULL; |
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158 } |
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159 |
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160 static int login_process_read_group(struct login_process *p) |
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161 { |
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162 struct login_group *group; |
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163 const char *name, *proto; |
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164 char buf[256]; |
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165 enum mail_protocol protocol; |
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166 unsigned int len; |
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167 ssize_t ret; |
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168 |
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169 /* read length */ |
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170 ret = read(p->fd, buf, 1); |
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171 if (ret != 1) |
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172 len = 0; |
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173 else { |
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174 len = buf[0]; |
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175 if (len >= sizeof(buf)) { |
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176 i_error("login: Server name length too large"); |
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177 return FALSE; |
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178 } |
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179 |
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180 ret = read(p->fd, buf, len); |
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181 } |
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182 |
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183 if (ret < 0) |
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184 i_error("login: read() failed: %m"); |
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185 else if (len == 0 || (size_t)ret != len) |
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186 i_error("login: Server name wasn't sent"); |
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187 else { |
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188 name = t_strndup(buf, len); |
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189 proto = strchr(buf, '/'); |
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190 if (proto == NULL) { |
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191 i_error("login: Missing protocol from server name '%s'", |
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192 name); |
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193 return FALSE; |
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194 } |
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195 name = t_strdup_until(buf, proto++); |
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196 |
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197 if (strcmp(proto, "imap") == 0) |
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198 protocol = MAIL_PROTOCOL_IMAP; |
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199 else if (strcmp(proto, "pop3") == 0) |
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200 protocol = MAIL_PROTOCOL_IMAP; |
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201 else { |
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202 i_error("login: Unknown protocol '%s'", proto); |
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203 return FALSE; |
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204 } |
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205 |
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206 group = login_group_process_find(name, protocol); |
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207 if (group == NULL) { |
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208 i_error("login: Unknown server name '%s'", name); |
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209 return FALSE; |
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210 } |
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211 |
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212 p->group = group; |
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213 return login_process_init_group(p); |
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214 } |
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215 return FALSE; |
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216 } |
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217 |
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218 static void login_process_input(void *context) |
0 | 219 { |
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220 struct login_process *p = context; |
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221 struct auth_process *auth_process; |
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222 struct login_auth_request *authreq; |
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223 struct master_login_request req; |
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224 int client_fd; |
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225 ssize_t ret; |
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226 |
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227 if (p->group == NULL) { |
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228 /* we want to read the group */ |
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229 if (!login_process_read_group(p)) |
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230 login_process_destroy(p); |
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231 return; |
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232 } |
0 | 233 |
234 ret = fd_read(p->fd, &req, sizeof(req), &client_fd); | |
235 if (ret != sizeof(req)) { | |
236 if (ret == 0) { | |
237 /* disconnected, ie. the login process died */ | |
238 } else if (ret > 0) { | |
239 /* req wasn't fully read */ | |
240 i_error("login: fd_read() couldn't read all req"); | |
241 } else { | |
242 i_error("login: fd_read() failed: %m"); | |
243 } | |
244 | |
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245 if (client_fd != -1) { |
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246 if (close(client_fd) < 0) |
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247 i_error("close(mail client) failed: %m"); |
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248 } |
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249 |
0 | 250 login_process_destroy(p); |
251 return; | |
252 } | |
253 | |
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254 if (client_fd == -1) { |
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255 /* just a notification that the login process */ |
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256 if (!p->initialized) { |
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257 /* initialization notify */ |
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258 p->initialized = TRUE;; |
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259 } else { |
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260 /* not listening for new connections anymore */ |
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261 login_process_mark_nonlistening(p); |
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262 } |
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263 return; |
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264 } |
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265 |
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266 fd_close_on_exec(client_fd, TRUE); |
0 | 267 |
268 /* ask the cookie from the auth process */ | |
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269 authreq = i_new(struct login_auth_request, 1); |
0 | 270 p->refcount++; |
271 authreq->process = p; | |
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272 authreq->tag = ++auth_id_counter; |
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273 authreq->login_tag = req.tag; |
0 | 274 authreq->fd = client_fd; |
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275 authreq->local_ip = req.local_ip; |
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276 authreq->remote_ip = req.remote_ip; |
0 | 277 |
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278 auth_process = auth_process_find(req.auth_pid); |
0 | 279 if (auth_process == NULL) { |
280 i_error("login: Authentication process %u doesn't exist", | |
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281 req.auth_pid); |
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282 auth_master_callback(NULL, NULL, authreq); |
0 | 283 } else { |
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284 auth_process_request(auth_process, p->pid, |
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285 req.auth_id, authreq); |
0 | 286 } |
287 } | |
288 | |
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289 static struct login_process * |
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290 login_process_new(struct login_group *group, pid_t pid, int fd) |
0 | 291 { |
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292 struct login_process *p; |
0 | 293 |
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294 i_assert(pid != 0); |
0 | 295 |
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296 p = i_new(struct login_process, 1); |
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297 p->group = group; |
0 | 298 p->refcount = 1; |
299 p->pid = pid; | |
300 p->fd = fd; | |
613
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301 p->listening = TRUE; |
0 | 302 p->io = io_add(fd, IO_READ, login_process_input, p); |
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303 p->output = o_stream_create_file(fd, default_pool, |
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304 sizeof(struct master_login_reply)*10, |
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305 FALSE); |
0 | 306 |
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307 PID_ADD_PROCESS_TYPE(pid, PROCESS_TYPE_LOGIN); |
195
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308 hash_insert(processes, POINTER_CAST(pid), p); |
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309 |
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310 if (p->group != NULL) { |
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311 p->group->processes++; |
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312 p->group->listening_processes++; |
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313 } |
0 | 314 return p; |
315 } | |
316 | |
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317 static void login_process_remove_from_lists(struct login_process *p) |
613
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318 { |
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319 if (p->group == NULL) |
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320 return; |
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321 |
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322 if (p == p->group->oldest_nonlisten_process) |
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323 p->group->oldest_nonlisten_process = p->next_nonlisten; |
613
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324 else |
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325 p->prev_nonlisten->next_nonlisten = p->next_nonlisten; |
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326 |
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327 if (p == p->group->newest_nonlisten_process) |
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328 p->group->newest_nonlisten_process = p->prev_nonlisten; |
613
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329 else |
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330 p->next_nonlisten->prev_nonlisten = p->prev_nonlisten; |
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331 |
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332 p->next_nonlisten = p->prev_nonlisten = NULL; |
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333 } |
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334 |
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335 static void login_process_destroy(struct login_process *p) |
0 | 336 { |
337 if (p->destroyed) | |
338 return; | |
339 p->destroyed = TRUE; | |
340 | |
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341 if (!p->initialized && io_loop_is_running(ioloop)) { |
1000
0fbafade2d85
If auth/login process died unexpectedly, the exit status or killing signal
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342 i_error("Login process died too early - shutting down"); |
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343 io_loop_stop(ioloop); |
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344 } |
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345 |
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346 if (p->listening && p->group != NULL) |
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347 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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348 |
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349 o_stream_close(p->output); |
0 | 350 io_remove(p->io); |
805
5ac361acb316
Marked all non-trivial buffer modifications with @UNSAFE tag. Several
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351 if (close(p->fd) < 0) |
5ac361acb316
Marked all non-trivial buffer modifications with @UNSAFE tag. Several
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352 i_error("close(login) failed: %m"); |
0 | 353 |
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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|
354 if (!p->listening) |
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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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|
355 login_process_remove_from_lists(p); |
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Finally support for handling each login connection in it's own process.
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|
356 |
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357 if (p->group != NULL) |
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358 p->group->processes--; |
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359 |
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360 if (p->pid != 0) |
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361 hash_remove(processes, POINTER_CAST(p->pid)); |
613
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Finally support for handling each login connection in it's own process.
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|
362 |
0 | 363 login_process_unref(p); |
364 } | |
365 | |
903
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Naming style changes, finally got tired of most of the typedefs. Also the
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|
366 static void login_process_unref(struct login_process *p) |
0 | 367 { |
368 if (--p->refcount > 0) | |
369 return; | |
370 | |
764
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|
371 o_stream_unref(p->output); |
0 | 372 i_free(p); |
373 } | |
374 | |
1273
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375 static void login_process_init_env(struct login_group *group, pid_t pid) |
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376 { |
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|
377 struct settings *set = group->set; |
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|
378 |
2000
c7c19f5071c3
Write all logging through master process. Fixes problems with log rotation,
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diff
changeset
|
379 child_process_init_env(); |
1273
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380 |
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|
381 /* setup access environment - needs to be done after |
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|
382 clean_child_process() since it clears environment */ |
1724
b3526668de78
Make sure auth process and login process don't share uids.
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1610
diff
changeset
|
383 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
|
384 set->server->login_gid, |
1506
e7c627bacaaf
Allow first_valid_gid to be 0. Drop any supplementary groups not in valid
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diff
changeset
|
385 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
|
386 0, 0); |
1273
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|
387 |
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|
388 env_put("DOVECOT_MASTER=1"); |
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|
389 |
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|
390 if (!set->ssl_disable) { |
1907
190f1d315ce6
Added setting ssl_ca_file, patch by Zach Bagnall
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diff
changeset
|
391 if (set->ssl_ca_file != NULL) { |
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Added setting ssl_ca_file, patch by Zach Bagnall
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diff
changeset
|
392 env_put(t_strconcat("SSL_CA_FILE=", |
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|
393 set->ssl_ca_file, NULL)); |
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|
394 } |
1273
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395 env_put(t_strconcat("SSL_CERT_FILE=", |
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|
396 set->ssl_cert_file, NULL)); |
1610
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|
397 env_put(t_strconcat("SSL_KEY_FILE=", |
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|
398 set->ssl_key_file, NULL)); |
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|
399 env_put(t_strconcat("SSL_PARAM_FILE=", |
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|
400 set->ssl_parameters_file, NULL)); |
1996 | 401 if (set->ssl_cipher_list != NULL) { |
402 env_put(t_strconcat("SSL_CIPHER_LIST=", | |
403 set->ssl_cipher_list, NULL)); | |
404 } | |
1997
1d0985f6bdd9
Added ssl_verify_client_cert setting.
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1996
diff
changeset
|
405 if (set->ssl_verify_client_cert) |
1d0985f6bdd9
Added ssl_verify_client_cert setting.
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1996
diff
changeset
|
406 env_put("SSL_VERIFY_CLIENT_CERT=1"); |
1273
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|
407 } |
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|
408 |
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|
409 if (set->disable_plaintext_auth) |
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|
410 env_put("DISABLE_PLAINTEXT_AUTH=1"); |
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|
411 if (set->verbose_proctitle) |
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|
412 env_put("VERBOSE_PROCTITLE=1"); |
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|
413 if (set->verbose_ssl) |
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|
414 env_put("VERBOSE_SSL=1"); |
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|
415 |
1610
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changeset
|
416 if (set->login_process_per_connection) { |
1273
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|
417 env_put("PROCESS_PER_CONNECTION=1"); |
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|
418 env_put("MAX_LOGGING_USERS=1"); |
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|
419 } else { |
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|
420 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
|
421 set->login_max_logging_users)); |
1273
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|
422 } |
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|
423 |
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|
424 env_put(t_strdup_printf("PROCESS_UID=%s", dec2str(pid))); |
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425 } |
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426 |
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Rewrote setting handling. Changed some existing settings also since POP3
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427 static pid_t create_login_process(struct login_group *group) |
0 | 428 { |
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429 static const char *argv[] = { NULL, NULL }; |
2046 | 430 struct log_io *log; |
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Write all logging through master process. Fixes problems with log rotation,
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431 const char *prefix; |
0 | 432 pid_t pid; |
2000
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433 int fd[2], log_fd; |
0 | 434 |
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435 if (group->set->login_process_per_connection && |
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436 group->processes - group->listening_processes >= |
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437 group->set->login_max_logging_users) { |
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438 if (group->oldest_nonlisten_process != NULL) |
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439 login_process_destroy(group->oldest_nonlisten_process); |
613
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Finally support for handling each login connection in it's own process.
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440 } |
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Finally support for handling each login connection in it's own process.
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441 |
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442 if (group->set->login_uid == 0) |
0 | 443 i_fatal("Login process must not run as root"); |
444 | |
445 /* create communication to process with a socket pair */ | |
2000
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446 if (socketpair(AF_UNIX, SOCK_STREAM, 0, fd) < 0) { |
0 | 447 i_error("socketpair() failed: %m"); |
448 return -1; | |
449 } | |
450 | |
2046 | 451 log_fd = log_create_pipe(&log); |
2000
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Write all logging through master process. Fixes problems with log rotation,
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452 if (log_fd < 0) |
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453 pid = -1; |
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Write all logging through master process. Fixes problems with log rotation,
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454 else { |
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Write all logging through master process. Fixes problems with log rotation,
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|
455 pid = fork(); |
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456 if (pid < 0) |
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Write all logging through master process. Fixes problems with log rotation,
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457 i_error("fork() failed: %m"); |
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Write all logging through master process. Fixes problems with log rotation,
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458 } |
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459 |
0 | 460 if (pid < 0) { |
461 (void)close(fd[0]); | |
462 (void)close(fd[1]); | |
2000
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|
463 (void)close(log_fd); |
0 | 464 return -1; |
465 } | |
466 | |
467 if (pid != 0) { | |
468 /* master */ | |
2046 | 469 prefix = t_strdup_printf("%s-login: ", |
470 process_names[group->process_type]); | |
471 log_set_prefix(log, prefix); | |
472 | |
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473 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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474 fd_close_on_exec(fd[0], TRUE); |
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475 (void)login_process_new(group, pid, fd[0]); |
0 | 476 (void)close(fd[1]); |
2000
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Write all logging through master process. Fixes problems with log rotation,
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477 (void)close(log_fd); |
0 | 478 return pid; |
479 } | |
480 | |
2046 | 481 prefix = t_strdup_printf("master-%s-login: ", |
482 process_names[group->process_type]); | |
483 log_set_prefix(log, prefix); | |
484 | |
0 | 485 /* move the listen handle */ |
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486 if (dup2(group->set->listen_fd, LOGIN_LISTEN_FD) < 0) |
2046 | 487 i_fatal("dup2(listen_fd) failed: %m"); |
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488 fd_close_on_exec(LOGIN_LISTEN_FD, FALSE); |
0 | 489 |
490 /* move the SSL listen handle */ | |
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491 if (dup2(group->set->ssl_listen_fd, LOGIN_SSL_LISTEN_FD) < 0) |
2046 | 492 i_fatal("dup2(ssl_listen_fd) failed: %m"); |
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493 fd_close_on_exec(LOGIN_SSL_LISTEN_FD, FALSE); |
0 | 494 |
1273
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495 /* move communication handle */ |
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496 if (dup2(fd[1], LOGIN_MASTER_SOCKET_FD) < 0) |
2046 | 497 i_fatal("dup2(master) failed: %m"); |
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498 fd_close_on_exec(LOGIN_MASTER_SOCKET_FD, FALSE); |
0 | 499 |
2000
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Write all logging through master process. Fixes problems with log rotation,
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500 if (dup2(log_fd, 2) < 0) |
2046 | 501 i_fatal("dup2(stderr) failed: %m"); |
2000
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502 fd_close_on_exec(2, FALSE); |
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Write all logging through master process. Fixes problems with log rotation,
Timo Sirainen <tss@iki.fi>
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503 |
0 | 504 (void)close(fd[0]); |
505 (void)close(fd[1]); | |
506 | |
1273
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507 login_process_init_env(group, getpid()); |
0 | 508 |
1610
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New configuration file code. Some syntax changes, but tries to be somewhat
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|
509 if (!group->set->login_chroot) { |
0 | 510 /* no chrooting, but still change to the directory */ |
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511 if (chdir(group->set->login_dir) < 0) { |
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
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512 i_fatal("chdir(%s) failed: %m", |
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513 group->set->login_dir); |
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514 } |
0 | 515 } |
516 | |
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New configuration file code. Some syntax changes, but tries to be somewhat
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|
517 restrict_process_size(group->set->login_process_size, (unsigned int)-1); |
722
0438621d25ff
Added virtual memory size limits to processes. Default values are pretty
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diff
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|
518 |
801
86224ff16bf6
Drop root privileges earlier. Close syslog more later in imap-master when
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parents:
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diff
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|
519 /* 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
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parents:
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diff
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|
520 any errors above will be logged */ |
86224ff16bf6
Drop root privileges earlier. Close syslog more later in imap-master when
Timo Sirainen <tss@iki.fi>
parents:
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diff
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|
521 closelog(); |
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Drop root privileges earlier. Close syslog more later in imap-master when
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522 |
0 | 523 /* hide the path, it's ugly */ |
1610
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
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524 argv[0] = strrchr(group->set->login_executable, '/'); |
6850142c4e25
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parents:
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diff
changeset
|
525 if (argv[0] == NULL) |
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526 argv[0] = group->set->login_executable; |
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527 else |
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New configuration file code. Some syntax changes, but tries to be somewhat
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|
528 argv[0]++; |
0 | 529 |
1610
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
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diff
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|
530 execv(group->set->login_executable, (char **) argv); |
0 | 531 |
1441
a83ce8395316
If exec() fails, show the full path rather than argv[0]
Timo Sirainen <tss@iki.fi>
parents:
1398
diff
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|
532 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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|
533 group->set->login_executable); |
0 | 534 return -1; |
535 } | |
536 | |
1055
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
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diff
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|
537 void login_process_abormal_exit(pid_t pid) |
615
0d852af6842e
Master process generates DH/RSA parameters now and stores them into file
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diff
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|
538 { |
1055
a72bba3f8a55
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diff
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|
539 struct login_process *p; |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
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parents:
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diff
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|
540 |
615
0d852af6842e
Master process generates DH/RSA parameters now and stores them into file
Timo Sirainen <tss@iki.fi>
parents:
614
diff
changeset
|
541 /* 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
|
542 the time */ |
1055
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
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diff
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|
543 p = hash_lookup(processes, POINTER_CAST(pid)); |
1275
af685269ead0
login: Wait until we're connected to auth process before executing command
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parents:
1273
diff
changeset
|
544 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
|
545 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>
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diff
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|
546 } |
0d852af6842e
Master process generates DH/RSA parameters now and stores them into file
Timo Sirainen <tss@iki.fi>
parents:
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diff
changeset
|
547 |
635
90a65c017bf0
SIGHUP reloads now settings. Logged in clients are left untouched, but
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parents:
615
diff
changeset
|
548 void login_processes_destroy_all(void) |
90a65c017bf0
SIGHUP reloads now settings. Logged in clients are left untouched, but
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parents:
615
diff
changeset
|
549 { |
1897
1e6ed8045f2b
Changed hash_foreach() to iterator.
Timo Sirainen <tss@iki.fi>
parents:
1724
diff
changeset
|
550 struct hash_iterate_context *iter; |
1e6ed8045f2b
Changed hash_foreach() to iterator.
Timo Sirainen <tss@iki.fi>
parents:
1724
diff
changeset
|
551 void *key, *value; |
1e6ed8045f2b
Changed hash_foreach() to iterator.
Timo Sirainen <tss@iki.fi>
parents:
1724
diff
changeset
|
552 |
1e6ed8045f2b
Changed hash_foreach() to iterator.
Timo Sirainen <tss@iki.fi>
parents:
1724
diff
changeset
|
553 iter = hash_iterate_init(processes); |
1e6ed8045f2b
Changed hash_foreach() to iterator.
Timo Sirainen <tss@iki.fi>
parents:
1724
diff
changeset
|
554 while (hash_iterate(iter, &key, &value)) |
1e6ed8045f2b
Changed hash_foreach() to iterator.
Timo Sirainen <tss@iki.fi>
parents:
1724
diff
changeset
|
555 login_process_destroy(value); |
1e6ed8045f2b
Changed hash_foreach() to iterator.
Timo Sirainen <tss@iki.fi>
parents:
1724
diff
changeset
|
556 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
|
557 |
1055
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
558 while (login_groups != NULL) { |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
559 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
|
560 |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
561 login_groups = group->next; |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
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1039
diff
changeset
|
562 login_group_destroy(group); |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
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parents:
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diff
changeset
|
563 } |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
564 } |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
565 |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
566 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:
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diff
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|
567 { |
1610
6850142c4e25
New configuration file code. Some syntax changes, but tries to be somewhat
Timo Sirainen <tss@iki.fi>
parents:
1506
diff
changeset
|
568 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
|
569 /* 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
|
570 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
|
571 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
|
572 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
|
573 (void)create_login_process(group); |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
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|
574 return; |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
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diff
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|
575 } |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
576 |
a72bba3f8a55
Rewrote setting handling. Changed some existing settings also since POP3
Timo Sirainen <tss@iki.fi>
parents:
1039
diff
changeset
|
577 /* 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
|
578 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
|
579 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
|
580 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
|
581 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
|
582 Then for each second that didn't use all existing processes, |
a72bba3f8a55
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583 drop the max. process count by one. */ |
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584 if (group->wanted_processes_count < group->set->login_processes_count) { |
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585 group->wanted_processes_count = |
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586 group->set->login_processes_count; |
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587 } else if (group->listening_processes == 0) |
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588 group->wanted_processes_count *= 2; |
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589 else if (group->wanted_processes_count > |
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590 group->set->login_processes_count) |
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591 group->wanted_processes_count--; |
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592 |
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593 if (group->wanted_processes_count > |
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594 group->set->login_max_processes_count) { |
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595 group->wanted_processes_count = |
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596 group->set->login_max_processes_count; |
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597 } |
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598 |
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599 while (group->listening_processes < group->wanted_processes_count) |
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600 (void)create_login_process(group); |
635
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601 } |
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602 |
903
fd8888f6f037
Naming style changes, finally got tired of most of the typedefs. Also the
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603 static void |
1036
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Removed useless parameters from io_callback_t and timeout_callback_t.
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604 login_processes_start_missing(void *context __attr_unused__) |
0 | 605 { |
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606 struct login_group *group; |
614
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607 |
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608 if (login_groups == NULL) |
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609 login_process_groups_create(); |
614
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diff
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610 |
1055
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611 for (group = login_groups; group != NULL; group = group->next) |
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612 login_group_start_missings(group); |
0 | 613 } |
614 | |
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615 static int login_process_send_env(struct login_process *p) |
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616 { |
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617 extern char **environ; |
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618 char **env; |
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619 size_t len; |
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620 int ret = 0; |
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621 |
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622 /* this will clear our environment. luckily we don't need it. */ |
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623 login_process_init_env(p->group, p->pid); |
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624 |
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625 for (env = environ; *env != NULL; env++) { |
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626 len = strlen(*env); |
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627 |
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628 if (o_stream_send(p->output, *env, len) != (ssize_t)len || |
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629 o_stream_send(p->output, "\n", 1) != 1) { |
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630 ret = -1; |
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631 break; |
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632 } |
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633 } |
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634 |
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635 if (ret == 0 && o_stream_send(p->output, "\n", 1) != 1) |
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636 ret = -1; |
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637 |
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638 env_clean(); |
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639 return ret; |
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640 } |
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641 |
1275
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|
642 static int login_process_init_group(struct login_process *p) |
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643 { |
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644 p->group->processes++; |
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645 p->group->listening_processes++; |
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646 |
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647 if (login_process_send_env(p) < 0) { |
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648 i_error("login: Couldn't send environment"); |
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|
649 return FALSE; |
af685269ead0
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|
650 } |
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|
651 |
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|
652 return TRUE; |
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653 } |
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654 |
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655 static void inetd_login_accept(void *context __attr_unused__) |
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656 { |
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657 struct login_process *p; |
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658 int fd; |
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659 |
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660 fd = net_accept(inetd_login_fd, NULL, NULL); |
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661 if (fd < 0) { |
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662 if (fd < -1) |
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663 i_fatal("accept(inetd_login_fd) failed: %m"); |
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664 } else { |
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665 net_set_nonblock(fd, TRUE); |
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666 fd_close_on_exec(fd, TRUE); |
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667 |
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668 p = login_process_new(NULL, ++login_pid_counter, fd); |
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669 p->initialized = TRUE; |
1273
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670 } |
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671 } |
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672 |
0 | 673 void login_processes_init(void) |
674 { | |
1273
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675 auth_id_counter = 0; |
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676 login_pid_counter = 0; |
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677 login_groups = NULL; |
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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|
678 |
945
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Rewrote hash table code, works with less memory now. Also some memory
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|
679 processes = hash_create(default_pool, default_pool, 128, NULL, NULL); |
1273
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680 if (!IS_INETD()) { |
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681 to = timeout_add(1000, login_processes_start_missing, NULL); |
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682 io_listen = NULL; |
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683 } else { |
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684 to = NULL; |
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685 io_listen = io_add(inetd_login_fd, IO_READ, |
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686 inetd_login_accept, NULL); |
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687 } |
0 | 688 } |
689 | |
690 void login_processes_deinit(void) | |
691 { | |
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692 if (to != NULL) |
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693 timeout_remove(to); |
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694 if (io_listen != NULL) |
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695 io_remove(io_listen); |
0 | 696 |
635
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|
697 login_processes_destroy_all(); |
0 | 698 hash_destroy(processes); |
699 } |