sendmail: compat update by Vladimir
function old new delta sendgetmail_main 1889 2091 +202 putchar_unlocked - 43 +43 putchar - 43 +43 packed_usage 24868 24910 +42 smtp_checkp 102 111 +9 uuencode 235 227 -8 ------------------------------------------------------------------------------ (add/remove: 2/0 grow/shrink: 3/1 up/down: 339/-8) Total: 331 bytes
This commit is contained in:
Denis Vlasenko
parent
682ad3045c
commit
bed22a01fb
@ -3467,20 +3467,25 @@
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#define sendmail_trivial_usage \
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"[-w timeout] [-H [user:pass@]server[:port]] [-S]\n" \
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"[-c charset] [-N type] [-i] [-s subject] [-a attach]... [-t] [-f sender] [rcpt]..."
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"[-N type] [-f sender] [-F fullname] " \
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USE_FEATURE_SENDMAIL_MAILX("[-s subject] [-c charset] [-a attach]... ") "[-t] [rcpt]..."
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#define sendmail_full_usage "\n\n" \
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"Send an email\n" \
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"\nOptions:" \
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"\n -w timeout Network timeout" \
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"\n -H [user:pass@]server[:port] Server" \
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"\n -S Use openssl connection helper for secure servers" \
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"\n -c charset Assume charset for body and subject (utf-8)" \
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"\n -N type Request delivery notification. Type is ignored" \
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"\n -i Ignore single dots in mail body. Implied" \
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"\n -s subject Subject" \
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"\n -a file File to attach. May be multiple" \
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"\n -t Read recipients and subject from body" \
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"\n -f sender Sender" \
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"\n -F fullname Sender full name. Overrides $NAME" \
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USE_FEATURE_SENDMAIL_MAILX( \
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"\n -s subject Subject" \
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"\n -c charset Assume charset for body and subject (" CONFIG_FEATURE_SENDMAIL_CHARSET ")" \
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"\n -a file File to attach. May be multiple" \
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)
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"\n -t Read recipients and subject from body" \
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"\n" \
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"\nOther options are silently ignored; -oi is implied" \
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#define seq_trivial_usage \
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"[first [increment]] last"
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@ -687,6 +687,27 @@ config SENDMAIL
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help
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Barebones sendmail.
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config FEATURE_SENDMAIL_MAILX
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bool "Allow to specify subject, attachments and their charset"
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default y
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depends on SENDMAIL
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help
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Allow to specify subject, attachments and their charset.
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config FEATURE_SENDMAIL_SSL
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bool "Allow to communicate via SSL/TLS"
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default y
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depends on SENDMAIL
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help
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Allow to use secure connections provided by openssl. E.g. @gmail.com.
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config FEATURE_SENDMAIL_CHARSET
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string "Default charset"
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default "utf-8"
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depends on SENDMAIL
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help
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Default charset of the message.
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config FETCHMAIL
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bool "fetchmail"
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default n
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@ -8,66 +8,10 @@
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*/
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#include "libbb.h"
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#define INITIAL_STDIN_FILENO 3
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static void uuencode(char *fname, const char *text)
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{
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enum {
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SRC_BUF_SIZE = 45, /* This *MUST* be a multiple of 3 */
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DST_BUF_SIZE = 4 * ((SRC_BUF_SIZE + 2) / 3),
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};
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#define src_buf text
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int fd;
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#define len fd
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char dst_buf[DST_BUF_SIZE + 1];
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if (fname) {
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fd = INITIAL_STDIN_FILENO;
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if (NOT_LONE_DASH(fname))
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fd = xopen(fname, O_RDONLY);
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src_buf = bb_common_bufsiz1;
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// N.B. strlen(NULL) segfaults!
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} else if (text) {
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// though we do not call uuencode(NULL, NULL) explicitly
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// still we do not want to break things suddenly
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len = strlen(text);
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} else
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return;
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fflush(stdout); // sync stdio and unistd output
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while (1) {
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size_t size;
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if (fname) {
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size = full_read(fd, (char *)src_buf, SRC_BUF_SIZE);
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if ((ssize_t)size < 0)
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bb_perror_msg_and_die(bb_msg_read_error);
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} else {
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size = len;
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if (len > SRC_BUF_SIZE)
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size = SRC_BUF_SIZE;
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}
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if (!size)
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break;
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// encode the buffer we just read in
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bb_uuencode(dst_buf, src_buf, size, bb_uuenc_tbl_base64);
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if (fname) {
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xwrite(STDOUT_FILENO, "\r\n", 2);
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} else {
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src_buf += size;
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len -= size;
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}
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xwrite(STDOUT_FILENO, dst_buf, 4 * ((size + 2) / 3));
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}
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if (fname)
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close(fd);
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#undef src_buf
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#undef len
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}
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struct globals {
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pid_t helper_pid;
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unsigned timeout;
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FILE *fp0; // initial stdin
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// arguments for SSL connection helper
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const char *xargs[9];
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// arguments for postprocess helper
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@ -76,6 +20,7 @@ struct globals {
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#define G (*ptr_to_globals)
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#define helper_pid (G.helper_pid)
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#define timeout (G.timeout )
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#define fp0 (G.fp0 )
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#define xargs (G.xargs )
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#define fargs (G.fargs )
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#define INIT_G() do { \
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@ -88,14 +33,67 @@ struct globals {
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xargs[5] = "-tls1"; \
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xargs[6] = "-starttls"; \
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xargs[7] = "smtp"; \
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fargs[0] = "utf-8"; \
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fargs[0] = CONFIG_FEATURE_SENDMAIL_CHARSET; \
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} while (0)
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#define opt_connect (xargs[4])
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#define opt_connect (xargs[4])
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#define opt_after_connect (xargs[5])
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#define opt_charset (fargs[0])
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#define opt_subject (fargs[1])
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#define opt_charset (fargs[0])
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#define opt_subject (fargs[1])
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static void uuencode(char *fname, const char *text)
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{
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enum {
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SRC_BUF_SIZE = 45, /* This *MUST* be a multiple of 3 */
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DST_BUF_SIZE = 4 * ((SRC_BUF_SIZE + 2) / 3),
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};
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#define src_buf text
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FILE *fp = fp;
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ssize_t len = len;
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char dst_buf[DST_BUF_SIZE + 1];
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if (fname) {
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fp = (NOT_LONE_DASH(fname)) ? xfopen_for_read(fname) : fp0;
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src_buf = bb_common_bufsiz1;
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// N.B. strlen(NULL) segfaults!
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} else if (text) {
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// though we do not call uuencode(NULL, NULL) explicitly
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// still we do not want to break things suddenly
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len = strlen(text);
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} else
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return;
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while (1) {
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size_t size;
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if (fname) {
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size = fread((char *)src_buf, 1, SRC_BUF_SIZE, fp);
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if ((ssize_t)size < 0)
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bb_perror_msg_and_die(bb_msg_read_error);
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} else {
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size = len;
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if (len > SRC_BUF_SIZE)
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size = SRC_BUF_SIZE;
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}
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if (!size)
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break;
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// encode the buffer we just read in
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bb_uuencode(dst_buf, src_buf, size, bb_uuenc_tbl_base64);
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if (fname) {
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printf("\r\n");
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} else {
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src_buf += size;
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len -= size;
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}
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fwrite(dst_buf, 1, 4 * ((size + 2) / 3), stdout);
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}
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if (fname)
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fclose(fp);
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#undef src_buf
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}
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#if ENABLE_FEATURE_SENDMAIL_SSL
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static void kill_helper(void)
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{
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// TODO!!!: is there more elegant way to terminate child on program failure?
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@ -107,7 +105,6 @@ static void kill_helper(void)
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static void signal_handler(int signo)
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{
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#define err signo
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if (SIGALRM == signo) {
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kill_helper();
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bb_error_msg_and_die("timed out");
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@ -151,6 +148,10 @@ static void launch_helper(const char **argv)
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signal_handler(SIGCHLD);
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// child seems OK -> parent goes on
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}
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#else
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#define kill_helper() ((void)0)
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#define launch_helper(x) bb_error_msg_and_die("no SSL support")
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#endif
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static const char *command(const char *fmt, const char *param)
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{
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@ -177,15 +178,14 @@ static int smtp_checkp(const char *fmt, const char *param, int code)
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while ((answer = xmalloc_fgetline(stdin)) != NULL)
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if (strlen(answer) <= 3 || '-' != answer[3])
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break;
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//bb_error_msg("FMT[%s]ANS[%s]", fmt, answer);
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if (answer) {
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int n = atoi(answer);
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//bb_error_msg("FMT[%s]COD[%d][%d]", fmt, n, code);
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alarm(0);
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if (ENABLE_FEATURE_CLEAN_UP) {
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free(answer);
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}
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if (-1 == code || n == code) {
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free(answer);
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if (-1 == code || n == code)
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return n;
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}
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}
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kill_helper();
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bb_error_msg_and_die("%s failed", msg);
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@ -283,30 +283,34 @@ static void rcptto(const char *s)
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int sendgetmail_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int sendgetmail_main(int argc UNUSED_PARAM, char **argv)
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{
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#if ENABLE_FEATURE_SENDMAIL_MAILX
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llist_t *opt_attachments = NULL;
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char *opt_from;
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#endif
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char *opt_from, *opt_fullname;
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const char *opt_user;
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const char *opt_pass;
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enum {
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OPT_w = 1 << 0, // network timeout
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OPT_H = 1 << 1, // [user:password@]server[:port]
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OPT_S = 1 << 2, // connect using openssl s_client helper
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OPTS_t = 1 << 3, // sendmail: read addresses from body
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OPTS_t = 1 << 3, // sendmail: read message for recipients
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OPTF_t = 1 << 3, // fetchmail: use "TOP" not "RETR"
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OPTS_s = 1 << 4, // sendmail: subject
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OPTS_N = 1 << 4, // sendmail: request notification
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OPTF_z = 1 << 4, // fetchmail: delete from server
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OPTS_c = 1 << 5, // sendmail: assumed charset
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OPTS_a = 1 << 6, // sendmail: attachment(s)
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OPTS_i = 1 << 7, // sendmail: ignore lone dots in message body (implied)
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OPTS_f = 1 << 5, // sendmail: sender address
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OPTS_F = 1 << 6, // sendmail: sender name, overrides $NAME
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OPTS_N = 1 << 8, // sendmail: request notification
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OPTS_f = 1 << 9, // sendmail: sender address
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OPTS_s = 1 << 7, // sendmail: subject
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OPTS_c = 1 << 8, // sendmail: assumed charset
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OPTS_a = 1 << 9, // sendmail: attachment(s)
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};
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const char *options;
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int opts;
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unsigned opts;
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// init global variables
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INIT_G();
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@ -317,11 +321,11 @@ int sendgetmail_main(int argc UNUSED_PARAM, char **argv)
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if (!ENABLE_FETCHMAIL || 's' == applet_name[0]) {
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// SENDMAIL
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// save initial stdin since body is piped!
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xdup2(STDIN_FILENO, INITIAL_STDIN_FILENO);
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xdup2(STDIN_FILENO, 3);
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fp0 = fdopen(3, "r");
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opt_complementary = "w+:a::";
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options = "w:H:St" "s:c:a:iN:f:";
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// body is pseudo attachment read from stdin
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llist_add_to_end(&opt_attachments, (char *)"-");
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options = "w:H:St" "N:f:F:" USE_FEATURE_SENDMAIL_MAILX("s:c:a:")
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"X:V:vq:R:O:o:nmL:Iih:GC:B:b:A:"; // postfix compat only, ignored
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} else {
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// FETCHMAIL
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opt_after_connect = NULL;
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@ -330,15 +334,19 @@ int sendgetmail_main(int argc UNUSED_PARAM, char **argv)
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}
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opts = getopt32(argv, options,
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&timeout /* -w */, &opt_connect /* -H */,
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&opt_subject, &opt_charset, &opt_attachments, NULL, &opt_from
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NULL, &opt_from, &opt_fullname,
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#if ENABLE_FEATURE_SENDMAIL_MAILX
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&opt_subject, &opt_charset, &opt_attachments,
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#endif
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NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL
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);
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//argc -= optind;
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argv += optind;
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// connect to server
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// host[:port] not specified ? -> use $HOSTNAME. no $HOSTNAME ? -> use localhost
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// host[:port] not specified ? -> use $SMTPHOST. no $SMTPHOST ? -> use localhost
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if (!(opts & OPT_H)) {
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opt_connect = getenv("HOSTNAME");
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opt_connect = getenv("SMTPHOST");
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if (!opt_connect)
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opt_connect = "127.0.0.1";
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}
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@ -376,18 +384,13 @@ int sendgetmail_main(int argc UNUSED_PARAM, char **argv)
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{
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int code;
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char *boundary;
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const char *fmt;
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const char *p;
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char *q;
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llist_t *l;
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llist_t *headers = NULL;
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char *domain = sane(safe_getdomainname());
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// got no sender address? -> use username as a resort
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if (!(opts & OPTS_f)) {
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char *domain = safe_getdomainname();
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opt_from = xasprintf("%s@%s", opt_user, domain);
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if (ENABLE_FEATURE_CLEAN_UP)
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free(domain);
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}
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// introduce to server
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@ -399,9 +402,11 @@ int sendgetmail_main(int argc UNUSED_PARAM, char **argv)
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}
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// we should start with modern EHLO
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if (250 != smtp_checkp("EHLO %s", sane(opt_from), -1)) {
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smtp_checkp("HELO %s", opt_from, 250);
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if (250 != smtp_checkp("EHLO %s", domain, -1)) {
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smtp_checkp("HELO %s", domain, 250);
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}
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if (ENABLE_FEATURE_CLEAN_UP)
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free(domain);
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// set sender
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// NOTE: if password has not been specified
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@ -431,37 +436,36 @@ int sendgetmail_main(int argc UNUSED_PARAM, char **argv)
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argv++;
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}
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// if -t specified or no recipients specified -> enter all-included mode
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// i.e. scan stdin for To:, Cc:, Bcc:, and Subject: lines ...
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// if -t specified or no recipients specified -> read recipients from message
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// i.e. scan stdin for To:, Cc:, Bcc: lines ...
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// ... and then use the rest of stdin as message body
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// N.B. subject read from body has priority
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// over that specified on command line.
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// recipients are merged
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// N.B. subject read from body can be further overrided with one specified on command line.
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// recipients are merged. Bcc: lines are deleted
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// N.B. other headers are collected and will be dumped verbatim
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if (opts & OPTS_t || !headers) {
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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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while ((s = xmalloc_fgetline(fp0)) != NULL) {
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if (0 == strncasecmp("To: ", s, 4) || 0 == strncasecmp("Cc: ", s, 4)) {
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rcptto(sane(s+4));
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llist_add_to_end(&headers, s);
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} else if (0 == strncasecmp("Bcc: ", s, 5)) {
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rcptto(sane(s+5));
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if (ENABLE_FEATURE_CLEAN_UP)
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free(s);
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free(s);
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// N.B. Bcc vanishes from headers!
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/* } else if (0 == strncmp("From: ", s, 6)) {
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opt_from = s+6;
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opts |= OPTS_f;
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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 if (0 == strncmp("Subject: ", s, 9)) {
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// we read subject -> use it verbatim unless it is specified
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// on command line
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if (!(opts & OPTS_s))
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llist_add_to_end(&headers, s);
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else
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free(s);
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} else if (s[0]) {
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// misc header
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llist_add_to_end(&headers, s);
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} else {
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free(s);
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break; // empty line
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break; // stop on the first empty line
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}
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}
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}
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@ -476,18 +480,27 @@ int sendgetmail_main(int argc UNUSED_PARAM, char **argv)
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free(l->data);
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}
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// put address header
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printf("From: %s\r\n", opt_from);
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// put encoded subject
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// put (possibly encoded) subject
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if (opts & OPTS_c)
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sane((char *)opt_charset);
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if (opts & OPTS_s) {
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printf("Subject: =?%s?B?", opt_charset);
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uuencode(NULL, opt_subject);
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printf("?=\r\n");
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printf("Subject: ");
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if (opts & OPTS_c) {
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printf("=?%s?B?", opt_charset);
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uuencode(NULL, opt_subject);
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printf("?=");
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} else {
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printf("%s", opt_subject);
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}
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printf("\r\n");
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}
|
||||
|
||||
// put sender name, $NAME is the default
|
||||
if (!(opts & OPTS_F))
|
||||
opt_fullname = getenv("NAME");
|
||||
if (opt_fullname)
|
||||
printf("From: \"%s\" <%s>\r\n", opt_fullname, opt_from);
|
||||
|
||||
// put notification
|
||||
if (opts & OPTS_N)
|
||||
printf("Disposition-Notification-To: %s\r\n", opt_from);
|
||||
@ -496,58 +509,92 @@ int sendgetmail_main(int argc UNUSED_PARAM, char **argv)
|
||||
srand(monotonic_us());
|
||||
boundary = xasprintf("%d-%d-%d", rand(), rand(), rand());
|
||||
|
||||
// put common headers and body start
|
||||
printf(
|
||||
"Message-ID: <%s>\r\n"
|
||||
"Mime-Version: 1.0\r\n"
|
||||
"%smultipart/mixed; boundary=\"%s\"\r\n"
|
||||
, boundary
|
||||
, "Content-Type: "
|
||||
, boundary
|
||||
);
|
||||
// put common headers
|
||||
// TODO: do we really need this?
|
||||
// printf("Message-ID: <%s>\r\n", boundary);
|
||||
|
||||
#if ENABLE_FEATURE_SENDMAIL_MAILX
|
||||
// have attachments? -> compose multipart MIME
|
||||
if (opt_attachments) {
|
||||
const char *fmt;
|
||||
const char *p;
|
||||
char *q;
|
||||
|
||||
// put body + attachment(s)
|
||||
// N.B. all these weird things just to be tiny
|
||||
// by reusing string patterns!
|
||||
fmt =
|
||||
"\r\n--%s\r\n"
|
||||
"%stext/plain; charset=%s\r\n"
|
||||
"%s%s\r\n"
|
||||
"%s"
|
||||
;
|
||||
p = opt_charset;
|
||||
q = (char *)"";
|
||||
l = opt_attachments;
|
||||
while (l) {
|
||||
printf(
|
||||
fmt
|
||||
, boundary
|
||||
"Mime-Version: 1.0\r\n"
|
||||
"%smultipart/mixed; boundary=\"%s\"\r\n"
|
||||
, "Content-Type: "
|
||||
, p
|
||||
, "Content-Disposition: inline"
|
||||
, q
|
||||
, "Content-Transfer-Encoding: base64\r\n"
|
||||
, boundary
|
||||
);
|
||||
p = "";
|
||||
|
||||
// body is pseudo attachment read from stdin in first turn
|
||||
llist_add_to(&opt_attachments, (char *)"-");
|
||||
|
||||
// put body + attachment(s)
|
||||
// N.B. all these weird things just to be tiny
|
||||
// by reusing string patterns!
|
||||
fmt =
|
||||
"\r\n--%s\r\n"
|
||||
"%sapplication/octet-stream%s\r\n"
|
||||
"%s; filename=\"%s\"\r\n"
|
||||
"%stext/plain; charset=%s\r\n"
|
||||
"%s%s\r\n"
|
||||
"%s"
|
||||
;
|
||||
uuencode(l->data, NULL);
|
||||
l = l->link;
|
||||
if (l)
|
||||
q = bb_get_last_path_component_strip(l->data);
|
||||
}
|
||||
p = opt_charset;
|
||||
q = (char *)"";
|
||||
l = opt_attachments;
|
||||
while (l) {
|
||||
printf(
|
||||
fmt
|
||||
, boundary
|
||||
, "Content-Type: "
|
||||
, p
|
||||
, "Content-Disposition: inline"
|
||||
, q
|
||||
, "Content-Transfer-Encoding: base64\r\n"
|
||||
);
|
||||
p = "";
|
||||
fmt =
|
||||
"\r\n--%s\r\n"
|
||||
"%sapplication/octet-stream%s\r\n"
|
||||
"%s; filename=\"%s\"\r\n"
|
||||
"%s"
|
||||
;
|
||||
uuencode(l->data, NULL);
|
||||
l = l->link;
|
||||
if (l)
|
||||
q = bb_get_last_path_component_strip(l->data);
|
||||
}
|
||||
|
||||
// put message terminator
|
||||
printf("\r\n--%s--\r\n" "\r\n", boundary);
|
||||
// put message terminator
|
||||
printf("\r\n--%s--\r\n" "\r\n", boundary);
|
||||
|
||||
// no attachments? -> just dump message
|
||||
} else
|
||||
#endif
|
||||
{
|
||||
char *s;
|
||||
// terminate headers
|
||||
printf("\r\n");
|
||||
// put plain text respecting leading dots
|
||||
while ((s = xmalloc_fgetline(fp0)) != NULL) {
|
||||
// escape leading dots
|
||||
// N.B. this feature is implied even if no -i switch given
|
||||
// N.B. we need to escape the leading dot regardless of
|
||||
// whether it is single or not character on the line
|
||||
if (/*(opts & OPTS_i) && */ '.' == s[0] /*&& '\0' == s[1] */)
|
||||
printf(".");
|
||||
// dump read line
|
||||
printf("%s\r\n", s);
|
||||
}
|
||||
}
|
||||
|
||||
// leave "put message" mode
|
||||
smtp_check(".", 250);
|
||||
// ... and say goodbye
|
||||
smtp_check("QUIT", 221);
|
||||
// cleanup
|
||||
if (ENABLE_FEATURE_CLEAN_UP)
|
||||
fclose(fp0);
|
||||
}
|
||||
#if ENABLE_FETCHMAIL
|
||||
/***************************************************
|
||||
@ -671,5 +718,5 @@ int sendgetmail_main(int argc UNUSED_PARAM, char **argv)
|
||||
}
|
||||
#endif // ENABLE_FETCHMAIL
|
||||
|
||||
return 0;
|
||||
return EXIT_SUCCESS;
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user