Mercurial > masqmail
annotate src/spool.c @ 136:6b78aaced5e1
check max length of addresses in SMTP dialog
(based on Paolo's patch)
get_address() does now return false if the address was too long
| author | meillo@marmaro.de |
|---|---|
| date | Tue, 06 Jul 2010 14:28:08 +0200 |
| parents | a80ebfa16cd5 |
| children | 3708b655a371 |
| rev | line source |
|---|---|
| 0 | 1 /* MasqMail |
| 2 Copyright (C) 1999-2001 Oliver Kurth | |
|
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3 Copyright (C) 2010 markus schnalke <meillo@marmaro.de> |
| 0 | 4 |
| 5 This program is free software; you can redistribute it and/or modify | |
| 6 it under the terms of the GNU General Public License as published by | |
| 7 the Free Software Foundation; either version 2 of the License, or | |
| 8 (at your option) any later version. | |
| 9 | |
| 10 This program is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 13 GNU General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU General Public License | |
| 16 along with this program; if not, write to the Free Software | |
| 17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
| 18 */ | |
| 19 | |
| 15 | 20 #include <sys/stat.h> |
| 21 | |
| 0 | 22 #include "masqmail.h" |
| 23 #include "dotlock.h" | |
| 24 | |
|
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25 static gint |
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26 read_line(FILE * in, gchar * buf, gint buf_len) |
| 0 | 27 { |
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28 gint p = 0; |
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29 gint c; |
| 0 | 30 |
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31 while ((c = getc(in)) != '\n' && (c != EOF)) { |
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32 if (p >= buf_len - 1) { |
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33 buf[buf_len-1] = '\0'; |
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34 ungetc(c, in); |
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35 return buf_len; |
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36 } |
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37 buf[p++] = c; |
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38 } |
| 0 | 39 |
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40 if (c == EOF) { |
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41 return -1; |
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42 } |
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43 if ((p > 0) && (buf[p - 1] == '\r')) |
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44 p--; |
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45 buf[p++] = '\n'; |
| 15 | 46 buf[p] = '\0'; |
| 0 | 47 |
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48 return p; |
| 0 | 49 } |
| 50 | |
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51 static void |
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52 spool_write_rcpt(FILE * out, address * rcpt) |
| 0 | 53 { |
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54 gchar dlvrd_char = addr_is_delivered(rcpt) ? 'X' : (addr_is_failed(rcpt) ? 'F' : ' '); |
| 0 | 55 |
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56 if (rcpt->local_part[0] != '|') { |
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57 /* this is a paranoid check, in case it slipped through: */ |
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58 /* if this happens, it is a bug */ |
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59 if (rcpt->domain == NULL) { |
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60 logwrite(LOG_WARNING, "BUG: null domain for address %s, setting to %s\n", rcpt->local_part, conf.host_name); |
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61 logwrite(LOG_WARNING, "please report this bug.\n"); |
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62 rcpt->domain = g_strdup(conf.host_name); |
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63 } |
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64 fprintf(out, "RT:%c%s\n", dlvrd_char, addr_string(rcpt)); |
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65 } else { |
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66 fprintf(out, "RT:%c%s\n", dlvrd_char, rcpt->local_part); |
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67 } |
| 0 | 68 } |
| 69 | |
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70 static address* |
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71 spool_scan_rcpt(gchar * line) |
| 0 | 72 { |
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73 address *rcpt = NULL; |
| 0 | 74 |
| 15 | 75 if (line[3] != '\0') { |
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76 if (line[4] != '|') { |
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77 rcpt = create_address(&(line[4]), TRUE); |
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78 } else { |
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79 rcpt = create_address_pipe(&(line[4])); |
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80 } |
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81 if (line[3] == 'X') { |
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82 addr_mark_delivered(rcpt); |
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83 } else if (line[3] == 'F') { |
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84 addr_mark_failed(rcpt); |
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85 } |
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86 } |
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87 return rcpt; |
| 0 | 88 } |
| 89 | |
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90 gboolean |
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91 spool_read_data(message * msg) |
| 0 | 92 { |
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93 FILE *in; |
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94 gchar *spool_file; |
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95 |
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96 DEBUG(5) debugf("spool_read_data entered\n"); |
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97 spool_file = g_strdup_printf("%s/input/%s-D", conf.spool_dir, msg->uid); |
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98 DEBUG(5) debugf("reading data spool file '%s'\n", spool_file); |
| 82 | 99 in = fopen(spool_file, "r"); |
| 100 if (!in) { | |
| 101 logwrite(LOG_ALERT, "could not open spool data file %s: %s\n", spool_file, strerror(errno)); | |
| 102 return FALSE; | |
| 103 } | |
| 0 | 104 |
| 82 | 105 char buf[MAX_DATALINE]; |
| 106 int len; | |
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107 |
| 82 | 108 /* msg uid */ |
| 109 read_line(in, buf, MAX_DATALINE); | |
| 110 | |
| 111 /* data */ | |
| 112 msg->data_list = NULL; | |
| 113 while ((len = read_line(in, buf, MAX_DATALINE)) > 0) { | |
| 114 msg->data_list = g_list_prepend(msg->data_list, g_strdup(buf)); | |
| 115 } | |
| 116 msg->data_list = g_list_reverse(msg->data_list); | |
| 117 fclose(in); | |
| 118 return TRUE; | |
| 0 | 119 } |
| 120 | |
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121 gboolean |
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122 spool_read_header(message * msg) |
| 0 | 123 { |
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124 FILE *in; |
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125 gchar *spool_file; |
| 0 | 126 |
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127 /* header spool: */ |
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128 spool_file = g_strdup_printf("%s/input/%s-H", conf.spool_dir, msg->uid); |
| 82 | 129 in = fopen(spool_file, "r"); |
| 130 if (!in) { | |
| 131 logwrite(LOG_ALERT, "could not open spool header file %s: %s\n", | |
| 132 spool_file, strerror(errno)); | |
| 133 return FALSE; | |
| 134 } | |
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135 |
| 82 | 136 header *hdr = NULL; |
| 137 char buf[MAX_DATALINE]; | |
| 138 int len; | |
| 139 | |
| 140 /* msg uid */ | |
| 141 read_line(in, buf, MAX_DATALINE); | |
| 0 | 142 |
| 82 | 143 /* envelope header */ |
| 144 while ((len = read_line(in, buf, MAX_DATALINE)) > 0) { | |
| 145 if (buf[0] == '\n') { | |
| 146 break; | |
| 147 } else if (strncasecmp(buf, "MF:", 3) == 0) { | |
| 148 msg->return_path = create_address(&(buf[3]), TRUE); | |
| 149 DEBUG(3) debugf("spool_read: MAIL FROM: %s", msg->return_path->address); | |
| 150 } else if (strncasecmp(buf, "RT:", 3) == 0) { | |
| 151 address *addr; | |
| 152 addr = spool_scan_rcpt(buf); | |
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153 if (addr_is_delivered(addr) || addr_is_failed(addr)) { |
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154 msg->non_rcpt_list = g_list_append(msg->non_rcpt_list, addr); |
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155 } else { |
| 82 | 156 msg->rcpt_list = g_list_append(msg->rcpt_list, addr); |
| 157 } | |
| 158 } else if (strncasecmp(buf, "PR:", 3) == 0) { | |
| 159 prot_id i; | |
| 160 for (i = 0; i < PROT_NUM; i++) { | |
| 161 if (strncasecmp(prot_names[i], &(buf[3]), strlen(prot_names[i])) == 0) { | |
| 162 break; | |
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163 } |
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164 } |
| 82 | 165 msg->received_prot = i; |
| 166 } else if (strncasecmp(buf, "RH:", 3) == 0) { | |
| 167 g_strchomp(buf); | |
| 168 msg->received_host = g_strdup(&(buf[3])); | |
| 169 } else if (strncasecmp(buf, "ID:", 3) == 0) { | |
| 170 g_strchomp(buf); | |
| 171 msg->ident = g_strdup(&(buf[3])); | |
| 172 } else if (strncasecmp(buf, "DS:", 3) == 0) { | |
| 173 msg->data_size = atoi(&(buf[3])); | |
| 174 } else if (strncasecmp(buf, "TR:", 3) == 0) { | |
| 175 msg->received_time = (time_t) (atoi(&(buf[3]))); | |
| 176 } else if (strncasecmp(buf, "TW:", 3) == 0) { | |
| 177 msg->warned_time = (time_t) (atoi(&(buf[3]))); | |
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178 } |
| 82 | 179 /* so far ignore other tags */ |
| 180 } | |
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181 |
| 82 | 182 /* mail headers */ |
| 183 while ((len = read_line(in, buf, MAX_DATALINE)) > 0) { | |
| 184 if (strncasecmp(buf, "HD:", 3) == 0) { | |
| 185 hdr = get_header(&(buf[3])); | |
| 186 msg->hdr_list = g_list_append(msg->hdr_list, hdr); | |
| 187 } else if ((buf[0] == ' ' || buf[0] == '\t') && hdr) { | |
| 188 char *tmp = hdr->header; | |
| 189 /* header continuation */ | |
| 190 hdr->header = g_strconcat(hdr->header, buf, NULL); | |
| 191 hdr->value = hdr->header + (hdr->value - tmp); | |
| 192 } else { | |
| 193 break; | |
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194 } |
| 82 | 195 } |
| 196 fclose(in); | |
| 197 return TRUE; | |
| 0 | 198 } |
| 199 | |
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200 message* |
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201 msg_spool_read(gchar * uid, gboolean do_readdata) |
| 0 | 202 { |
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203 message *msg; |
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204 gboolean ok = FALSE; |
| 0 | 205 |
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206 msg = create_message(); |
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207 msg->uid = g_strdup(uid); |
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208 |
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209 DEBUG(4) debugf("msg_spool_read():\n"); |
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210 /* header spool: */ |
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211 ok = spool_read_header(msg); |
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212 DEBUG(4) debugf(" spool_read_header()=%d, do_readdata=%d\n", ok, do_readdata); |
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213 if (ok && do_readdata) { |
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214 /* data spool: */ |
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215 ok = spool_read_data(msg); |
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216 DEBUG(4) debugf(" spool_read_data()=%d\n", ok); |
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217 } |
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218 return msg; |
| 0 | 219 } |
| 220 | |
| 221 /* write header. uid and gid should already be set to the | |
| 222 mail ids. Better call spool_write(msg, FALSE). | |
| 223 */ | |
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224 static gboolean |
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225 spool_write_header(message * msg) |
| 0 | 226 { |
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227 GList *node; |
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228 gchar *spool_file, *tmp_file; |
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229 FILE *out; |
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230 gboolean ok = TRUE; |
| 0 | 231 |
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232 /* header spool: */ |
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233 tmp_file = g_strdup_printf("%s/input/%d-H.tmp", conf.spool_dir, getpid()); |
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234 DEBUG(4) debugf("tmp_file = %s\n", tmp_file); |
| 0 | 235 |
|
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236 if ((out = fopen(tmp_file, "w"))) { |
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237 DEBUG(6) debugf("opened tmp_file %s\n", tmp_file); |
| 0 | 238 |
|
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239 fprintf(out, "%s\n", msg->uid); |
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240 fprintf(out, "MF:%s\n", addr_string(msg->return_path)); |
| 0 | 241 |
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242 DEBUG(6) debugf("after MF\n"); |
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243 foreach(msg->rcpt_list, node) { |
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244 address *rcpt = (address *) (node->data); |
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245 spool_write_rcpt(out, rcpt); |
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246 } |
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247 foreach(msg->non_rcpt_list, node) { |
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248 address *rcpt = (address *) (node->data); |
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249 spool_write_rcpt(out, rcpt); |
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250 } |
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251 DEBUG(6) debugf("after RT\n"); |
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252 fprintf(out, "PR:%s\n", prot_names[msg->received_prot]); |
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253 if (msg->received_host != NULL) |
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254 fprintf(out, "RH:%s\n", msg->received_host); |
| 0 | 255 |
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256 if (msg->ident != NULL) |
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257 fprintf(out, "ID:%s\n", msg->ident); |
| 0 | 258 |
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259 if (msg->data_size >= 0) |
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260 fprintf(out, "DS: %d\n", msg->data_size); |
| 0 | 261 |
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262 if (msg->received_time > 0) |
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263 fprintf(out, "TR: %u\n", (int) (msg->received_time)); |
| 0 | 264 |
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265 if (msg->warned_time > 0) |
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266 fprintf(out, "TW: %u\n", (int) (msg->warned_time)); |
| 0 | 267 |
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268 DEBUG(6) debugf("after RH\n"); |
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269 fprintf(out, "\n"); |
| 0 | 270 |
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271 foreach(msg->hdr_list, node) { |
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272 header *hdr = (header *) (node->data); |
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273 fprintf(out, "HD:%s", hdr->header); |
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274 } |
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275 if (fflush(out) == EOF) |
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276 ok = FALSE; |
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277 else if (fdatasync(fileno(out)) != 0) { |
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278 if (errno != EINVAL) /* some fs do not support this.. I hope this also means that it is not necessary */ |
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279 ok = FALSE; |
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280 } |
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281 fclose(out); |
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282 if (ok) { |
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283 spool_file = g_strdup_printf("%s/input/%s-H", conf.spool_dir, msg->uid); |
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284 DEBUG(4) debugf("spool_file = %s\n", spool_file); |
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285 ok = (rename(tmp_file, spool_file) != -1); |
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286 g_free(spool_file); |
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287 } |
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288 } else { |
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289 logwrite(LOG_ALERT, "could not open temporary header spool file '%s': %s\n", tmp_file, strerror(errno)); |
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290 DEBUG(1) debugf("euid = %d, egid = %d\n", geteuid(), getegid()); |
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291 ok = FALSE; |
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292 } |
| 0 | 293 |
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294 g_free(tmp_file); |
| 0 | 295 |
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296 return ok; |
| 0 | 297 } |
| 298 | |
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299 gboolean |
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300 spool_write(message * msg, gboolean do_write_data) |
| 0 | 301 { |
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302 GList *list; |
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303 gchar *spool_file, *tmp_file; |
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304 FILE *out; |
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305 gboolean ok = TRUE; |
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306 uid_t saved_uid, saved_gid; |
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307 /* user can read/write, group can read, others cannot do anything: */ |
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308 mode_t saved_mode = saved_mode = umask(026); |
| 0 | 309 |
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310 /* set uid and gid to the mail ids */ |
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311 if (!conf.run_as_user) { |
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312 set_euidgid(conf.mail_uid, conf.mail_gid, &saved_uid, &saved_gid); |
| 0 | 313 } |
| 314 | |
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315 /* header spool: */ |
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316 ok = spool_write_header(msg); |
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317 |
| 82 | 318 if (ok && do_write_data) { |
| 319 /* data spool: */ | |
| 320 tmp_file = g_strdup_printf("%s/input/%d-D.tmp", conf.spool_dir, getpid()); | |
| 321 DEBUG(4) debugf("tmp_file = %s\n", tmp_file); | |
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322 |
| 82 | 323 if ((out = fopen(tmp_file, "w"))) { |
| 324 fprintf(out, "%s\n", msg->uid); | |
| 325 for (list = g_list_first(msg->data_list); list != NULL; list = g_list_next(list)) { | |
| 326 fprintf(out, "%s", (gchar *) (list->data)); | |
| 327 } | |
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328 |
| 82 | 329 /* possibly paranoid ;-) */ |
| 330 if (fflush(out) == EOF) { | |
| 331 ok = FALSE; | |
| 332 } else if (fdatasync(fileno(out)) != 0) { | |
| 333 if (errno != EINVAL) { /* some fs do not support this.. I hope this also means that it is not necessary */ | |
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334 ok = FALSE; |
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335 } |
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336 } |
| 82 | 337 fclose(out); |
| 338 if (ok) { | |
| 339 spool_file = g_strdup_printf("%s/input/%s-D", conf.spool_dir, msg->uid); | |
| 340 DEBUG(4) debugf("spool_file = %s\n", spool_file); | |
| 341 ok = (rename(tmp_file, spool_file) != -1); | |
| 342 g_free(spool_file); | |
| 343 } | |
| 344 } else { | |
| 345 logwrite(LOG_ALERT, "could not open temporary data spool file: %s\n", | |
| 346 strerror(errno)); | |
| 347 ok = FALSE; | |
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348 } |
| 82 | 349 g_free(tmp_file); |
| 0 | 350 } |
| 351 | |
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352 /* set uid and gid back */ |
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353 if (!conf.run_as_user) { |
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354 set_euidgid(saved_uid, saved_gid, NULL, NULL); |
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355 } |
| 0 | 356 |
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357 umask(saved_mode); |
| 0 | 358 |
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359 return ok; |
| 0 | 360 } |
| 361 | |
| 362 #define MAX_LOCKAGE 300 | |
| 363 | |
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364 gboolean |
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365 spool_lock(gchar * uid) |
| 0 | 366 { |
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367 uid_t saved_uid, saved_gid; |
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368 gchar *hitch_name; |
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369 gchar *lock_name; |
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370 gboolean ok = FALSE; |
| 0 | 371 |
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372 hitch_name = g_strdup_printf("%s/%s-%d.lock", conf.lock_dir, uid, getpid()); |
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373 lock_name = g_strdup_printf("%s/%s.lock", conf.lock_dir, uid); |
| 0 | 374 |
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375 /* set uid and gid to the mail ids */ |
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376 if (!conf.run_as_user) { |
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377 set_euidgid(conf.mail_uid, conf.mail_gid, &saved_uid, &saved_gid); |
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378 } |
| 0 | 379 |
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380 ok = dot_lock(lock_name, hitch_name); |
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381 if (!ok) |
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382 logwrite(LOG_WARNING, "spool file %s is locked\n", uid); |
| 0 | 383 |
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384 /* set uid and gid back */ |
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385 if (!conf.run_as_user) { |
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386 set_euidgid(saved_uid, saved_gid, NULL, NULL); |
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387 } |
| 0 | 388 |
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389 g_free(lock_name); |
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390 g_free(hitch_name); |
| 0 | 391 |
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392 return ok; |
| 0 | 393 } |
| 394 | |
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395 gboolean |
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396 spool_unlock(gchar * uid) |
| 0 | 397 { |
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398 uid_t saved_uid, saved_gid; |
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399 gchar *lock_name; |
| 0 | 400 |
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401 /* set uid and gid to the mail ids */ |
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402 if (!conf.run_as_user) { |
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403 set_euidgid(conf.mail_uid, conf.mail_gid, &saved_uid, &saved_gid); |
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404 } |
| 0 | 405 |
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406 lock_name = g_strdup_printf("%s/%s.lock", conf.lock_dir, uid); |
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407 dot_unlock(lock_name); |
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408 g_free(lock_name); |
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409 |
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410 /* set uid and gid back */ |
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411 if (!conf.run_as_user) { |
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412 set_euidgid(saved_uid, saved_gid, NULL, NULL); |
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413 } |
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414 return TRUE; |
| 0 | 415 } |
| 416 | |
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417 gboolean |
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418 spool_delete_all(message * msg) |
| 0 | 419 { |
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420 uid_t saved_uid, saved_gid; |
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421 gchar *spool_file; |
| 0 | 422 |
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423 /* set uid and gid to the mail ids */ |
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424 if (!conf.run_as_user) { |
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425 set_euidgid(conf.mail_uid, conf.mail_gid, &saved_uid, &saved_gid); |
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426 } |
| 0 | 427 |
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428 /* header spool: */ |
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429 spool_file = g_strdup_printf("%s/input/%s-H", conf.spool_dir, msg->uid); |
| 82 | 430 if (unlink(spool_file) != 0) { |
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431 logwrite(LOG_ALERT, "could not delete spool file %s: %s\n", spool_file, strerror(errno)); |
| 82 | 432 } |
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433 g_free(spool_file); |
| 0 | 434 |
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435 /* data spool: */ |
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436 spool_file = g_strdup_printf("%s/input/%s-D", conf.spool_dir, msg->uid); |
| 82 | 437 if (unlink(spool_file) != 0) { |
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438 logwrite(LOG_ALERT, "could not delete spool file %s: %s\n", spool_file, strerror(errno)); |
| 82 | 439 } |
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440 g_free(spool_file); |
| 0 | 441 |
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442 /* set uid and gid back */ |
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443 if (!conf.run_as_user) { |
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444 set_euidgid(saved_uid, saved_gid, NULL, NULL); |
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445 } |
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446 return TRUE; |
| 0 | 447 } |