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crond: add handling of "MAILTO=user" lines
sendmail: handle a case when the whole mail comes from stdin (and no separate sender/subj is provided) both by dronnikov AT gmail.com function old new delta sendgetmail_main 1509 1674 +165 SynchronizeFile 671 767 +96 packed_usage 24054 24088 +34 crond_main 1404 1420 +16 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 4/0 up/down: 311/0) Total: 311 bytes
This commit is contained in:
Denis Vlasenko
parent
90c31b3d4b
commit
6fa1ba3972
@ -33,7 +33,11 @@
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#define SENDMAIL "sendmail"
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#endif
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#ifndef SENDMAIL_ARGS
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#define SENDMAIL_ARGS "-ti", "oem"
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# if ENABLE_SENDMAIL
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# define SENDMAIL_ARGS "localhost", line->cl_MailTo
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# else
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# define SENDMAIL_ARGS "-ti", "oem"
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# endif
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#endif
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#ifndef CRONUPDATE
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#define CRONUPDATE "cron.update"
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@ -59,6 +63,7 @@ typedef struct CronLine {
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#if ENABLE_FEATURE_CROND_CALL_SENDMAIL
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int cl_MailPos; /* 'empty file' size */
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smallint cl_MailFlag; /* running pid is for mail */
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char *cl_MailTo; /* whom to mail results */
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#endif
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/* ordered by size, not in natural order. makes code smaller: */
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char cl_Dow[7]; /* 0-6, beginning sunday */
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@ -449,6 +454,9 @@ static void SynchronizeFile(const char *fileName)
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int maxEntries;
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int maxLines;
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char buf[1024];
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#if ENABLE_FEATURE_CROND_CALL_SENDMAIL
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char *mailTo = NULL;
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#endif
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if (!fileName)
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return;
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@ -485,6 +493,14 @@ static void SynchronizeFile(const char *fileName)
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if (DebugOpt) {
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crondlog(LVL5 "user:%s entry:%s", fileName, buf);
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}
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/* check if line is setting MAILTO= */
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if (0 == strncmp("MAILTO=", buf, 7)) {
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#if ENABLE_FEATURE_CROND_CALL_SENDMAIL
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free(mailTo);
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mailTo = (buf[7]) ? xstrdup(buf+7) : NULL;
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#endif /* otherwise just ignore such lines */
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continue;
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}
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*pline = line = xzalloc(sizeof(CronLine));
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/* parse date ranges */
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ptr = ParseField(file->cf_User, line->cl_Mins, 60, 0, NULL, buf);
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@ -498,10 +514,14 @@ static void SynchronizeFile(const char *fileName)
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continue;
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}
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/*
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* fix days and dow - if one is not * and the other
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* is *, the other is set to 0, and vise-versa
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* fix days and dow - if one is not "*" and the other
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* is "*", the other is set to 0, and vise-versa
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*/
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FixDayDow(line);
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#if ENABLE_FEATURE_CROND_CALL_SENDMAIL
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/* copy mailto (can be NULL) */
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line->cl_MailTo = xstrdup(mailTo);
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#endif
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/* copy command */
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line->cl_Shell = xstrdup(ptr);
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if (DebugOpt) {
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@ -515,7 +535,7 @@ static void SynchronizeFile(const char *fileName)
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FileBase = file;
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if (maxLines == 0 || maxEntries == 0) {
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crondlog(WARN9 "maximum number of lines reached for user %s", fileName);
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crondlog(WARN9 "user %s: too many lines", fileName);
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}
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}
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fclose(fi);
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@ -567,7 +587,7 @@ static void SynchronizeDir(void)
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if (!dir)
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crondlog(DIE9 "can't chdir(%s)", "."); /* exits */
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while ((den = readdir(dir))) {
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while ((den = readdir(dir)) != NULL) {
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if (strchr(den->d_name, '.') != NULL) {
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continue;
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}
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@ -811,23 +831,25 @@ ForkJob(const char *user, CronLine *line, int mailFd,
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static void RunJob(const char *user, CronLine *line)
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{
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char mailFile[128];
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int mailFd;
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int mailFd = -1;
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line->cl_Pid = 0;
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line->cl_MailFlag = 0;
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/* open mail file - owner root so nobody can screw with it. */
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snprintf(mailFile, sizeof(mailFile), "%s/cron.%s.%d", TMPDIR, user, getpid());
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mailFd = open(mailFile, O_CREAT | O_TRUNC | O_WRONLY | O_EXCL | O_APPEND, 0600);
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if (line->cl_MailTo) {
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/* open mail file - owner root so nobody can screw with it. */
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snprintf(mailFile, sizeof(mailFile), "%s/cron.%s.%d", TMPDIR, user, getpid());
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mailFd = open(mailFile, O_CREAT | O_TRUNC | O_WRONLY | O_EXCL | O_APPEND, 0600);
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if (mailFd >= 0) {
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line->cl_MailFlag = 1;
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fdprintf(mailFd, "To: %s\nSubject: cron: %s\n\n", user,
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line->cl_Shell);
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line->cl_MailPos = lseek(mailFd, 0, SEEK_CUR);
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} else {
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crondlog(ERR20 "cannot create mail file %s for user %s, "
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"discarding output", mailFile, user);
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if (mailFd >= 0) {
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line->cl_MailFlag = 1;
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fdprintf(mailFd, "To: %s\nSubject: cron: %s\n\n", user,
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line->cl_Shell);
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line->cl_MailPos = lseek(mailFd, 0, SEEK_CUR);
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} else {
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crondlog(ERR20 "cannot create mail file %s for user %s, "
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"discarding output", mailFile, user);
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}
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}
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ForkJob(user, line, mailFd, DEFAULT_SHELL, "-c", line->cl_Shell, mailFile);
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@ -877,7 +899,8 @@ static void EndJob(const char *user, CronLine *line)
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close(mailFd);
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return;
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}
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ForkJob(user, line, mailFd, SENDMAIL, SENDMAIL_ARGS, NULL);
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if (line->cl_MailTo)
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ForkJob(user, line, mailFd, SENDMAIL, SENDMAIL_ARGS, NULL);
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}
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#else /* crond without sendmail */
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@ -273,6 +273,7 @@ int sendgetmail_main(int argc ATTRIBUTE_UNUSED, char **argv)
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OPTS_c = 1 << 6, // sendmail: assumed charset
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OPTS_t = 1 << 7, // sendmail: recipient(s)
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OPTS_i = 1 << 8, // sendmail: ignore lone dots in message body (implied)
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};
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const char *options;
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@ -288,8 +289,8 @@ int sendgetmail_main(int argc ATTRIBUTE_UNUSED, char **argv)
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// SENDMAIL
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// save initial stdin (body or attachements can be piped!)
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xdup2(STDIN_FILENO, INITIAL_STDIN_FILENO);
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opt_complementary = "-2:w+:t:t::"; // count(-t) > 0
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options = "w:U:P:X" "ns:c:t:";
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opt_complementary = "-2:w+:t::";
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options = "w:U:P:X" "ns:c:t:i";
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} else {
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// FETCHMAIL
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opt_after_connect = NULL;
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@ -346,6 +347,29 @@ int sendgetmail_main(int argc ATTRIBUTE_UNUSED, char **argv)
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// get the sender
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opt_from = sane(*argv++);
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// if no recipients _and_ no body files specified -> enter all-included mode
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// i.e. scan stdin for To: and Subject: lines ...
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// ... and then use the rest of stdin as message body
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if (!opt_recipients && !*argv) {
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// fetch recipients and (optionally) subject
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char *s;
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while ((s = xmalloc_reads(INITIAL_STDIN_FILENO, NULL, NULL)) != NULL) {
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if (0 == strncmp("To: ", s, 4)) {
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llist_add_to_end(&opt_recipients, s+4);
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} else if (0 == strncmp("Subject: ", s, 9)) {
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opt_subject = s+9;
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opts |= OPTS_s;
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} else {
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char first = s[0];
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free(s);
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if (!first)
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break; // empty line
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}
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}
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// order to read body from stdin
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*--argv = (char *)"-";
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}
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// introduce to server
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// we should start with modern EHLO
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if (250 != smtp_checkp("EHLO %s", opt_from, -1)) {
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