Mercurial > dovecot > original-hg > dovecot-1.2

annotate src/deliver/smtp-client.c @ 7086:7ed926ed7aa4 HEAD

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Updated copyright notices to include year 2008.
author Timo Sirainen <tss@iki.fi>
date Tue, 01 Jan 2008 22:05:21 +0200
parents 65c69a53a7be
children db0d0d7385fd
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7086
7ed926ed7aa4 Updated copyright notices to include year 2008.
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diff changeset
1 /* Copyright (c) 2006-2008 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 "deliver.h"
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5 #include "smtp-client.h"
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6
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7 #include <unistd.h>
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8 #include <sys/wait.h>
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9
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10 struct smtp_client {
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11 FILE *f;
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12 pid_t pid;
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13 };
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14
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15 static struct smtp_client *smtp_client_devnull(FILE **file_r)
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16 {
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17 struct smtp_client *client;
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18
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19 client = i_new(struct smtp_client, 1);
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20 client->f = *file_r = fopen("/dev/null", "w");
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21 if (client->f == NULL)
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22 i_fatal("fopen() failed: %m");
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23 client->pid = (pid_t)-1;
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24 return client;
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25 }
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26
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27 static void ATTR_NORETURN
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28 smtp_client_run_sendmail(const char *destination,
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29 const char *return_path, int fd)
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30 {
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31 const char *argv[7], *sendmail_path;
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32
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33 /* deliver_set's contents may point to environment variables.
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34 deliver_env_clean() cleans them up, so they have to be copied. */
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35 sendmail_path = t_strdup(deliver_set->sendmail_path);
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36
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37 argv[0] = sendmail_path;
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38 argv[1] = "-i"; /* ignore dots */
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39 argv[2] = "-f";
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40 argv[3] = return_path != NULL && *return_path != '\0' ?
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41 return_path : "<>";
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42 argv[4] = "--";
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43 argv[5] = destination;
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44 argv[6] = NULL;
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45
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46 if (dup2(fd, STDIN_FILENO) < 0)
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47 i_fatal("dup2() failed: %m");
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48
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49 deliver_env_clean();
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50
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51 (void)execv(sendmail_path, (void *)argv);
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52 i_fatal("execv(%s) failed: %m", sendmail_path);
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53 }
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54
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55 struct smtp_client *smtp_client_open(const char *destination,
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56 const char *return_path, FILE **file_r)
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57 {
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58 struct smtp_client *client;
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59 int fd[2];
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60 pid_t pid;
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61
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62 if (pipe(fd) < 0) {
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63 i_error("pipe() failed: %m");
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64 return smtp_client_devnull(file_r);
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65 }
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66
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67 if ((pid = fork()) == (pid_t)-1) {
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68 i_error("fork() failed: %m");
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69 (void)close(fd[0]); (void)close(fd[1]);
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70 return smtp_client_devnull(file_r);
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71 }
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72 if (pid == 0) {
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73 /* child */
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74 (void)close(fd[1]);
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75 smtp_client_run_sendmail(destination, return_path, fd[0]);
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76 }
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77 (void)close(fd[0]);
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78
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79 client = i_new(struct smtp_client, 1);
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80 client->f = *file_r = fdopen(fd[1], "w");
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81 if (client->f == NULL)
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82 i_fatal("fdopen() failed: %m");
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83 return client;
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84 }
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85
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86 int smtp_client_close(struct smtp_client *client)
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87 {
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88 int ret = EX_TEMPFAIL, status;
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89
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90 fclose(client->f);
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91 if (client->pid == (pid_t)-1) {
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92 /* smtp_client_open() failed already */
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93 } else if (waitpid(client->pid, &status, 0) < 0)
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94 i_error("waitpid() failed: %m");
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95 else if (WIFEXITED(status)) {
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96 ret = WEXITSTATUS(status);
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97 if (ret != 0) {
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98 i_error("Sendmail process terminated abnormally, "
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99 "exit status %d", ret);
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100 }
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101 } else if (WIFSIGNALED(status)) {
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102 i_error("Sendmail process terminated abnormally, "
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103 "signal %d", WTERMSIG(status));
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104 } else if (WIFSTOPPED(status)) {
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105 i_error("Sendmail process stopped, signal %d",
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106 WSTOPSIG(status));
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107 } else {
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108 i_error("Sendmail process terminated abnormally, "
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109 "return status %d", status);
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110 }
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111
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112 i_free(client);
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113 return ret;
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114 }