annotate src/director/doveadm-connection.c @ 11351:c57c1ff9c5f1 HEAD

doveadm director status username now returns which server the user is assigned to.
author Timo Sirainen <tss@iki.fi>
date Thu, 20 May 2010 11:46:21 +0200
parents 12316378922e
children 19336bddada2
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rev   line source
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1 /* Copyright (c) 2010 Dovecot authors, see the included COPYING file */
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2
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3 #include "lib.h"
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4 #include "ioloop.h"
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5 #include "network.h"
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6 #include "istream.h"
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7 #include "ostream.h"
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8 #include "array.h"
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9 #include "str.h"
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10 #include "llist.h"
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11 #include "user-directory.h"
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12 #include "mail-host.h"
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13 #include "director.h"
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14 #include "director-host.h"
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15 #include "director-request.h"
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16 #include "doveadm-connection.h"
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17
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18 #include <unistd.h>
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19
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20 #define DOVEADM_HANDSHAKE_EXPECTED "VERSION\tdirector-doveadm\t1\t"
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21 #define DOVEADM_HANDSHAKE DOVEADM_HANDSHAKE_EXPECTED"0\n"
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22
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23 #define MAX_VALID_VHOST_COUNT 1000
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24
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25 struct doveadm_connection {
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26 struct doveadm_connection *prev, *next;
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27
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28 int fd;
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29 struct io *io;
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30 struct istream *input;
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31 struct ostream *output;
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32 struct director *dir;
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33
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34 unsigned int handshaked:1;
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35 };
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36
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37 static struct doveadm_connection *doveadm_connections;
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38
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39 static void doveadm_connection_deinit(struct doveadm_connection **_conn);
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40
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41 static void doveadm_cmd_host_list(struct doveadm_connection *conn)
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42 {
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43 struct mail_host *const *hostp;
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44 string_t *str = t_str_new(1024);
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45
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46 array_foreach(mail_hosts_get(), hostp) {
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47 str_printfa(str, "%s\t%u\t%u\n",
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48 net_ip2addr(&(*hostp)->ip), (*hostp)->vhost_count,
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49 (*hostp)->user_count);
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50 }
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51 str_append_c(str, '\n');
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52 o_stream_send(conn->output, str_data(str), str_len(str));
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53 }
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54
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55 static void doveadm_cmd_director_list(struct doveadm_connection *conn)
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56 {
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57 struct director_host *const *hostp;
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58 string_t *str = t_str_new(1024);
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59
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60 array_foreach(&conn->dir->dir_hosts, hostp) {
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61 str_printfa(str, "%s\t%u\n",
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62 net_ip2addr(&(*hostp)->ip), (*hostp)->port);
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63 }
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64 str_append_c(str, '\n');
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65 o_stream_send(conn->output, str_data(str), str_len(str));
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66 }
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67
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68 static bool
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69 doveadm_cmd_host_set(struct doveadm_connection *conn, const char *line)
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70 {
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71 const char *const *args;
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72 struct mail_host *host;
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73 struct ip_addr ip;
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74 unsigned int vhost_count = -1U;
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75
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76 args = t_strsplit(line, "\t");
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77 if (args[0] == NULL ||
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78 net_addr2ip(args[0], &ip) < 0 ||
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79 (args[1] != NULL && str_to_uint(args[1], &vhost_count) < 0)) {
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80 i_error("doveadm sent invalid HOST-SET parameters");
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81 return FALSE;
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82 }
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83 if (vhost_count > MAX_VALID_VHOST_COUNT && vhost_count != -1U) {
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84 o_stream_send_str(conn->output, "vhost count too large\n");
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85 return TRUE;
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86 }
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87 host = mail_host_lookup(&ip);
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88 if (host == NULL)
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89 host = mail_host_add_ip(&ip);
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90 if (vhost_count != -1U)
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91 mail_host_set_vhost_count(host, vhost_count);
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92 director_update_host(conn->dir, conn->dir->self_host, host);
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93
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94 o_stream_send(conn->output, "OK\n", 3);
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95 return TRUE;
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96 }
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97
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98 static bool
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99 doveadm_cmd_host_remove(struct doveadm_connection *conn, const char *line)
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100 {
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101 struct mail_host *host;
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102 struct ip_addr ip;
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103
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104 if (net_addr2ip(line, &ip) < 0) {
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105 i_error("doveadm sent invalid HOST-SET parameters");
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106 return FALSE;
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107 }
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108 host = mail_host_lookup(&ip);
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109 if (host == NULL)
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110 o_stream_send_str(conn->output, "NOTFOUND\n");
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111 else {
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112 director_remove_host(conn->dir, conn->dir->self_host, host);
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113 o_stream_send(conn->output, "OK\n", 3);
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114 }
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115 return TRUE;
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116 }
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117
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118 static bool
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119 doveadm_cmd_user_lookup(struct doveadm_connection *conn, const char *line)
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120 {
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121 struct user *user;
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122 unsigned int hash;
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123
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124 hash = user_directory_get_username_hash(line);
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125 user = user_directory_lookup(conn->dir->users, hash);
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126 if (user == NULL)
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127 o_stream_send_str(conn->output, "NOTFOUND\n");
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128 else {
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129 o_stream_send_str(conn->output, t_strconcat(
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130 net_ip2addr(&user->host->ip), "\n", NULL));
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131 }
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132 return TRUE;
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133 }
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134
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135 static void doveadm_connection_input(struct doveadm_connection *conn)
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136 {
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137 const char *line;
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138 bool ret = TRUE;
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139
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140 if (!conn->handshaked) {
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141 if ((line = i_stream_read_next_line(conn->input)) == NULL)
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142 return;
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143
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144 if (strncmp(line, DOVEADM_HANDSHAKE_EXPECTED,
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145 strlen(DOVEADM_HANDSHAKE_EXPECTED)) != 0) {
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146 i_error("doveadm not compatible with this server "
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147 "(mixed old and new binaries?)");
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148 doveadm_connection_deinit(&conn);
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149 return;
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150 }
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151 conn->handshaked = TRUE;
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152 }
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153
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154 while ((line = i_stream_read_next_line(conn->input)) != NULL && ret) {
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155 if (strcmp(line, "HOST-LIST") == 0)
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156 doveadm_cmd_host_list(conn);
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157 else if (strcmp(line, "DIRECTOR-LIST") == 0)
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158 doveadm_cmd_director_list(conn);
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159 else if (strncmp(line, "HOST-SET\t", 9) == 0)
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160 ret = doveadm_cmd_host_set(conn, line + 9);
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161 else if (strncmp(line, "HOST-REMOVE\t", 12) == 0)
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162 ret = doveadm_cmd_host_remove(conn, line + 12);
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163 else if (strncmp(line, "USER-LOOKUP\t", 12) == 0)
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164 ret = doveadm_cmd_user_lookup(conn, line + 12);
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165 else {
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166 i_error("doveadm sent unknown command: %s", line);
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167 ret = FALSE;
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168 }
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169 }
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170 if (conn->input->eof || conn->input->stream_errno != 0 || !ret)
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171 doveadm_connection_deinit(&conn);
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172 }
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173
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174 struct doveadm_connection *
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175 doveadm_connection_init(struct director *dir, int fd)
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176 {
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177 struct doveadm_connection *conn;
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178
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179 conn = i_new(struct doveadm_connection, 1);
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180 conn->fd = fd;
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181 conn->dir = dir;
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182 conn->input = i_stream_create_fd(conn->fd, 1024, FALSE);
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183 conn->output = o_stream_create_fd(conn->fd, (size_t)-1, FALSE);
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184 conn->io = io_add(conn->fd, IO_READ, doveadm_connection_input, conn);
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185 o_stream_send_str(conn->output, DOVEADM_HANDSHAKE);
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186
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187 DLLIST_PREPEND(&doveadm_connections, conn);
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188 return conn;
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189 }
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190
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191 static void doveadm_connection_deinit(struct doveadm_connection **_conn)
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192 {
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193 struct doveadm_connection *conn = *_conn;
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194
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195 *_conn = NULL;
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196
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197 DLLIST_REMOVE(&doveadm_connections, conn);
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198 io_remove(&conn->io);
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199 i_stream_unref(&conn->input);
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200 o_stream_unref(&conn->output);
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201 if (close(conn->fd) < 0)
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202 i_error("close(doveadm connection) failed: %m");
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203 i_free(conn);
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204 }
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205
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206 void doveadm_connections_deinit(void)
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207 {
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208 while (doveadm_connections != NULL) {
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209 struct doveadm_connection *conn = doveadm_connections;
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210
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211 doveadm_connection_deinit(&conn);
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212 }
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213 }