+++ /dev/null
-/*
-** sendsbr.c -- routines to help WhatNow/Send along
-**
-** This code is Copyright (c) 2002, by the authors of nmh. See the
-** COPYRIGHT file in the root directory of the nmh distribution for
-** complete copyright information.
-*/
-
-#include <h/mh.h>
-#include <h/signals.h>
-#include <setjmp.h>
-#include <signal.h>
-#include <fcntl.h>
-#include <h/mime.h>
-#include <h/tws.h>
-#include <h/utils.h>
-
-#ifdef TIME_WITH_SYS_TIME
-# include <sys/time.h>
-# include <time.h>
-#else
-# ifdef TM_IN_SYS_TIME
-# include <sys/time.h>
-# else
-# include <time.h>
-# endif
-#endif
-
-int debugsw = 0; /* global */
-int forwsw = 1;
-int inplace = 1;
-int pushsw = 0;
-int verbsw = 0;
-
-char *altmsg = NULL; /* .. */
-char *annotext = NULL;
-char *distfile = NULL;
-
-static jmp_buf env;
-
-/* name of temp file for body content */
-static char body_file_name[MAXPATHLEN + 1];
-/* name of mhbuild composition temporary file */
-static char composition_file_name[MAXPATHLEN + 1];
-static int field_size; /* size of header field buffer */
-static char *field; /* header field buffer */
-static FILE *draft_file; /* draft file pointer */
-static FILE *body_file; /* body file pointer */
-static FILE *composition_file; /* composition file pointer */
-
-/*
-** external prototypes
-*/
-int sendsbr(char **, int, char *, struct stat *, int);
-char *getusername(void);
-
-/*
-** static prototypes
-*/
-static void armed_done(int) NORETURN;
-static void alert(char *, int);
-static int tmp_fd(void);
-static void anno(int, struct stat *);
-static void annoaux(int);
-static int sendaux(char **, int, char *, struct stat *);
-
-static int attach(char *);
-static void clean_up_temporary_files(void);
-static int get_line(void);
-static void make_mime_composition_file_entry(char *);
-
-
-/*
-** Entry point into (back-end) routines to send message.
-*/
-
-int
-sendsbr(char **vec, int vecp, char *drft, struct stat *st, int rename_drft)
-{
- int status;
- char buffer[BUFSIZ];
- char *original_draft; /* name of original draft file */
- char *p; /* string pointer for building file name */
-
- /*
- ** Save the original name of the draft file. The name of the
- ** draft file is changed to a temporary file containing the built
- ** MIME message if there are attachments. We need the original
- ** name so that it can be renamed after the message is sent.
- */
-
- original_draft = drft;
-
- /*
- ** Convert the draft to a MIME message.
- ** Use the mhbuild composition file for the draft if there was
- ** a successful conversion because that now contains the MIME
- ** message. A nice side effect of this is that it leaves the
- ** original draft file untouched so that it can be retrieved
- ** and modified if desired.
- */
- switch (attach(drft)) {
- case OK:
- drft = composition_file_name;
- break;
-
- case NOTOK:
- return (NOTOK);
-
- case DONE:
- break;
- }
-
- done=armed_done;
- switch (setjmp(env)) {
- case OK:
- status = sendaux(vec, vecp, drft, st) ? NOTOK : OK;
- /* rename the original draft */
- if (rename_drft && status == OK &&
- rename(original_draft, strncpy(buffer,
- m_backup(original_draft), sizeof(buffer)))
- == NOTOK)
- advise(buffer, "unable to rename %s to", drft);
- break;
-
- default:
- status = DONE;
- break;
- }
-
- done=exit;
- if (distfile)
- unlink(distfile);
-
- /*
- ** Get rid of any temporary files that we created for attachments.
- ** Also get rid of the renamed composition file that mhbuild
- ** leaves as a turd. It looks confusing, but we use the body
- ** file name to help build the renamed composition file name.
- */
-
- if (drft == composition_file_name) {
- clean_up_temporary_files();
-
- if (strlen(composition_file_name) >=
- sizeof (composition_file_name) - 6)
- advise(NULL, "unable to remove original composition file.");
-
- else {
- if ((p = strrchr(composition_file_name, '/')) == NULL)
- p = composition_file_name;
- else
- p++;
-
- strcpy(body_file_name, p);
- *p++ = ',';
- strcpy(p, body_file_name);
- strcat(p, ".orig");
-
- unlink(composition_file_name);
- }
- }
-
- return status;
-}
-
-static int
-attach(char *draft_file_name)
-{
- char buf[MAXPATHLEN + 6]; /* miscellaneous buffer */
- int c; /* current character for body copy */
- int has_attachment; /* draft has at least one attachment */
- int has_body; /* draft has a message body */
- int non_ascii; /* msg body contains non-ASCII chars */
- int length; /* length of attachment header field name */
- char *p; /* miscellaneous string pointer */
-
- /* Open up the draft file. */
- if ((draft_file = fopen(draft_file_name, "r")) == (FILE *)0)
- adios(NULL, "can't open draft file `%s'.",
- draft_file_name);
-
- /*
- ** Allocate a buffer to hold the header components as they're read in.
- ** This buffer might need to be quite large, so we grow it as needed.
- */
- field = (char *)mh_xmalloc(field_size = 256);
-
- /*
- ** Scan the draft file for an attachment header field name.
- ** The existence of one indicates that the
- ** draft has attachments. Bail out if there are no attachments
- ** because we're done. Read to the end of the headers even if
- ** we have no attachments.
- */
- length = strlen(attach_hdr);
-
- has_attachment = 0;
-
- while (get_line() != EOF && *field != '\0' && *field != '-') {
- if (strncasecmp(field, attach_hdr, length) == 0 &&
- field[length] == ':') {
- has_attachment = 1;
- }
- }
-
- /*
- ** Look for at least one non-blank line in the body of the
- ** message which indicates content in the body.
- ** Check if body contains at least one non-blank (= not empty)
- ** and if it contains any non-ASCII chars (= need MIME).
- */
- has_body = 0;
- non_ascii = 0;
-
- while (get_line() != EOF) {
- for (p = field; *p != '\0'; p++) {
- if (*p != ' ' && *p != '\t') {
- has_body = 1;
- }
- if (*p > 127 || *p < 0) {
- non_ascii = 1;
- }
- }
- if (has_body && non_ascii)
- break;
- }
-
- /*
- ** Bail out if there are no attachments and only ASCII text.
- ** This means we don't need to convert it to MIME.
- */
- if (!has_attachment && non_ascii==0) {
- return DONE;
- }
-
- /*
- ** Else: mimify
- */
-
- /* Make names for the temporary files. */
- strncpy(body_file_name,
- m_mktemp(toabsdir(invo_name), NULL, NULL),
- sizeof (body_file_name));
- strncpy(composition_file_name,
- m_mktemp(toabsdir(invo_name), NULL, NULL),
- sizeof (composition_file_name));
-
- if (has_body)
- body_file = fopen(body_file_name, "w");
-
- composition_file = fopen(composition_file_name, "w");
-
- if ((has_body && !body_file) || !composition_file) {
- clean_up_temporary_files();
- adios(NULL, "unable to open all of the temporary files.");
- }
-
- /*
- ** Start at the beginning of the draft file. Copy all
- ** non-attachment header fields to the temporary composition file.
- ** Then add the dashed line separator.
- */
- rewind(draft_file);
- while (get_line() != EOF && *field && *field != '-') {
- if (strncasecmp(field, attach_hdr, length) != 0 ||
- field[length] != ':') {
- fprintf(composition_file, "%s\n", field);
- }
- }
- fputs("--------\n", composition_file);
-
- if (has_body) {
- /* Copy the message body to the temporary file. */
- while ((c = getc(draft_file)) != EOF) {
- putc(c, body_file);
- }
- fclose(body_file);
-
- /* Add a mhbuild MIME composition file line for the body */
- /* charset will be discovered/guessed by buildmimeproc */
- fprintf(composition_file, "#text/plain %s\n", body_file_name);
- }
-
- /*
- ** Now, go back to the beginning of the draft file and look for
- ** header fields that specify attachments. Add a mhbuild MIME
- ** composition file for each.
- */
- rewind(draft_file);
- while (get_line() != EOF && *field && *field != '-') {
- if (strncasecmp(field, attach_hdr, length) == 0 &&
- field[length] == ':') {
- for (p = field+length+1; *p==' ' || *p=='\t'; p++) {
- continue;
- }
- if (*p == '+') {
- /* forwarded message */
- fprintf(composition_file, "#forw [forwarded message(s)] %s\n", p);
- } else {
- make_mime_composition_file_entry(p);
- }
- }
- }
-
- fclose(composition_file);
-
- /*
- ** We're ready to roll! Run mhbuild on the composition file.
- ** Note that mhbuild is in the context as buildmimeproc.
- */
- sprintf(buf, "%s %s", buildmimeproc, composition_file_name);
-
- if (system(buf) != 0) {
- clean_up_temporary_files();
- return (NOTOK);
- }
-
- return (OK);
-}
-
-static void
-clean_up_temporary_files(void)
-{
- unlink(body_file_name);
- unlink(composition_file_name);
-
- return;
-}
-
-static int
-get_line(void)
-{
- int c; /* current character */
- int n; /* number of bytes in buffer */
- char *p; /* buffer pointer */
-
- /*
- ** Get a line from the input file, growing the field buffer as
- ** needed. We do this so that we can fit an entire line in the
- ** buffer making it easy to do a string comparison on both the
- ** field name and the field body which might be a long path name.
- */
-
- for (n = 0, p = field; (c = getc(draft_file)) != EOF; *p++ = c) {
- if (c == '\n' && (c = getc(draft_file)) != ' ' && c != '\t') {
- ungetc(c, draft_file);
- c = '\n';
- break;
- }
-
- if (++n >= field_size - 1) {
- field = (char *)mh_xrealloc((void *)field, field_size += 256);
-
- p = field + n - 1;
- }
- }
-
- /* NUL-terminate the field. */
- *p = '\0';
-
- return (c);
-}
-
-static void
-make_mime_composition_file_entry(char *file_name)
-{
- FILE *fp;
- struct node *np;
- char *cp;
- char content_type[BUFSIZ];
- char cmdbuf[BUFSIZ];
- char *cmd = mimetypequeryproc;
-
- for (np = m_defs; np; np = np->n_next) {
- if (strcasecmp(np->n_name, mimetypequery)==0) {
- cmd = np->n_field;
- break;
- }
- }
- snprintf(cmdbuf, sizeof cmdbuf, "%s %s", cmd, file_name);
-
- if (!(fp = popen(cmdbuf, "r"))) {
- clean_up_temporary_files();
- adios(NULL, "unable to determine content type with `%s'",
- cmdbuf);
- }
- if (fgets(content_type, sizeof content_type, fp) &&
- (cp = strrchr(content_type, '\n'))) {
- *cp = '\0';
- } else {
- strcpy(content_type, "application/octet-stream");
- admonish(NULL, "problems with `%s', using fall back type `%s'",
- cmdbuf, content_type);
- }
- pclose(fp);
-
- /* TODO: don't use access(2) because it checks for ruid, not euid */
- if (access(file_name, R_OK) != 0) {
- clean_up_temporary_files();
- adios(NULL, "unable to access file `%s'", file_name);
- }
-
- fprintf(composition_file, "#%s; name=\"%s\" <>{attachment}",
- content_type,
- (!(cp = strrchr(file_name, '/'))) ? file_name : cp + 1);
-
- fprintf(composition_file, " %s\n", file_name);
-
- return;
-}
-
-/*
-** Annotate original message, and
-** call `postproc' to send message.
-*/
-static int
-sendaux(char **vec, int vecp, char *drft, struct stat *st)
-{
- pid_t child_id;
- int i, status, fd, fd2;
- char backup[BUFSIZ];
-
- fd = pushsw ? tmp_fd() : NOTOK;
- fd2 = NOTOK;
-
- vec[vecp++] = drft;
- if (annotext && (fd2 = tmp_fd()) == NOTOK) {
- admonish(NULL, "unable to create file for annotation list");
- }
- if (distfile && distout(drft, distfile, backup) == NOTOK)
- done(1);
- vec[vecp] = NULL;
-
- for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
- sleep(5);
-
- switch (child_id) {
- case -1:
- /* oops -- fork error */
- adios("fork", "unable to");
- break; /* NOT REACHED */
-
- case 0:
- /*
- ** child process -- send it
- **
- ** If fd is ok, then we are pushing and fd points to temp
- ** file, so capture anything on stdout and stderr there.
- */
- if (fd != NOTOK) {
- dup2(fd, fileno(stdout));
- dup2(fd, fileno(stderr));
- close(fd);
- }
- execvp(postproc, vec);
- fprintf(stderr, "unable to exec ");
- perror(postproc);
- _exit(-1);
- break; /* NOT REACHED */
-
- default:
- /*
- ** parent process -- wait for it
- */
- if ((status = pidwait(child_id, NOTOK)) == OK) {
- if (annotext && fd2 != NOTOK)
- anno(fd2, st);
- } else {
- /*
- ** If postproc failed, and we have good fd (which
- ** means we pushed), then mail error message
- ** (and possibly the draft) back to the user.
- */
- if (fd != NOTOK) {
- alert(drft, fd);
- close(fd);
- } else {
- advise(NULL, "message not delivered to anyone");
- }
- if (annotext && fd2 != NOTOK)
- close(fd2);
- if (distfile) {
- unlink(drft);
- if (rename(backup, drft) == NOTOK)
- advise(drft, "unable to rename %s to",
- backup);
- }
- }
- break;
- }
-
- return status;
-}
-
-
-/*
-** Mail error notification (and possibly a copy of the
-** message) back to the user, using the mailproc
-*/
-static void
-alert(char *file, int out)
-{
- pid_t child_id;
- int i, in;
- char buf[BUFSIZ];
-
- for (i = 0; (child_id = fork()) == NOTOK && i < 5; i++)
- sleep(5);
-
- switch (child_id) {
- case NOTOK:
- /* oops -- fork error */
- advise("fork", "unable to");
-
- case OK:
- /* child process -- send it */
- SIGNAL(SIGHUP, SIG_IGN);
- SIGNAL(SIGINT, SIG_IGN);
- SIGNAL(SIGQUIT, SIG_IGN);
- SIGNAL(SIGTERM, SIG_IGN);
- if (forwsw) {
- if ((in = open(file, O_RDONLY)) == NOTOK) {
- admonish(file, "unable to re-open");
- } else {
- lseek(out, (off_t) 0, SEEK_END);
- strncpy(buf, "\nMessage not delivered to anyone.\n", sizeof(buf));
- write(out, buf, strlen(buf));
- strncpy(buf, "\n------- Unsent Draft\n\n", sizeof(buf));
- write(out, buf, strlen(buf));
- cpydgst(in, out, file, "temporary file");
- close(in);
- strncpy(buf, "\n------- End of Unsent Draft\n", sizeof(buf));
- write(out, buf, strlen(buf));
- if (rename(file, strncpy(buf, m_backup(file), sizeof(buf))) == NOTOK)
- admonish(buf, "unable to rename %s to", file);
- }
- }
- lseek(out, (off_t) 0, SEEK_SET);
- dup2(out, fileno(stdin));
- close(out);
- /* create subject for error notification */
- snprintf(buf, sizeof(buf), "send failed on %s",
- forwsw ? "enclosed draft" : file);
-
- execlp(mailproc, mhbasename(mailproc), getusername(),
- "-subject", buf, NULL);
- fprintf(stderr, "unable to exec ");
- perror(mailproc);
- _exit(-1);
-
- default: /* no waiting... */
- break;
- }
-}
-
-
-static int
-tmp_fd(void)
-{
- int fd;
- char *tfile = NULL;
-
- tfile = m_mktemp2(NULL, invo_name, &fd, NULL);
- if (tfile == NULL) return NOTOK;
- fchmod(fd, 0600);
-
- if (debugsw)
- advise(NULL, "temporary file %s selected", tfile);
- else
- if (unlink(tfile) == NOTOK)
- advise(tfile, "unable to remove");
-
- return fd;
-}
-
-
-static void
-anno(int fd, struct stat *st)
-{
- pid_t child_id;
- sigset_t set, oset;
- static char *cwd = NULL;
- struct stat st2;
-
- if (altmsg && (stat(altmsg, &st2) == NOTOK ||
- st->st_mtime != st2.st_mtime ||
- st->st_dev != st2.st_dev ||
- st->st_ino != st2.st_ino)) {
- if (debugsw)
- admonish(NULL, "$mhaltmsg mismatch");
- return;
- }
-
- child_id = debugsw ? NOTOK : fork();
- switch (child_id) {
- case NOTOK: /* oops */
- if (!debugsw)
- advise(NULL, "unable to fork, so doing annotations by hand...");
- if (cwd == NULL)
- cwd = getcpy(pwd());
- /* fall */
-
- case OK:
- /* block a few signals */
- sigemptyset(&set);
- sigaddset(&set, SIGHUP);
- sigaddset(&set, SIGINT);
- sigaddset(&set, SIGQUIT);
- sigaddset(&set, SIGTERM);
- SIGPROCMASK(SIG_BLOCK, &set, &oset);
-
- annoaux(fd);
- if (child_id == OK)
- _exit(0);
-
- /* reset the signal mask */
- SIGPROCMASK(SIG_SETMASK, &oset, &set);
-
- chdir(cwd);
- break;
-
- default: /* no waiting... */
- close(fd);
- break;
- }
-}
-
-
-static void
-annoaux(int fd)
-{
- int fd2, fd3, msgnum;
- char *cp, *folder, *maildir;
- char buffer[BUFSIZ], **ap;
- FILE *fp;
- struct msgs *mp;
-
- if ((folder = getenv("mhfolder")) == NULL || *folder == 0) {
- if (debugsw)
- admonish(NULL, "$mhfolder not set");
- return;
- }
- maildir = toabsdir(folder);
- if (chdir(maildir) == NOTOK) {
- if (debugsw)
- admonish(maildir, "unable to change directory to");
- return;
- }
- if (!(mp = folder_read(folder))) {
- if (debugsw)
- admonish(NULL, "unable to read folder %s", folder);
- return;
- }
-
- /* check for empty folder */
- if (mp->nummsg == 0) {
- if (debugsw)
- admonish(NULL, "no messages in %s", folder);
- goto oops;
- }
-
- if ((cp = getenv("mhmessages")) == NULL || *cp == 0) {
- if (debugsw)
- admonish(NULL, "$mhmessages not set");
- goto oops;
- }
- if (!debugsw /* MOBY HACK... */
- && pushsw
- && (fd3 = open("/dev/null", O_RDWR)) != NOTOK
- && (fd2 = dup(fileno(stderr))) != NOTOK) {
- dup2(fd3, fileno(stderr));
- close(fd3);
- } else
- fd2 = NOTOK;
- for (ap = brkstring(cp = getcpy(cp), " ", NULL); *ap; ap++)
- m_convert(mp, *ap);
- free(cp);
- if (fd2 != NOTOK)
- dup2(fd2, fileno(stderr));
- if (mp->numsel == 0) {
- if (debugsw)
- admonish(NULL, "no messages to annotate");
- goto oops;
- }
-
- lseek(fd, (off_t) 0, SEEK_SET);
- if ((fp = fdopen(fd, "r")) == NULL) {
- if (debugsw)
- admonish(NULL, "unable to fdopen annotation list");
- goto oops;
- }
- cp = NULL;
- while (fgets(buffer, sizeof(buffer), fp) != NULL)
- cp = add(buffer, cp);
- fclose(fp);
-
- if (debugsw)
- advise(NULL, "annotate%s with %s: \"%s\"",
- inplace ? " inplace" : "", annotext, cp);
- for (msgnum = mp->lowsel; msgnum <= mp->hghsel; msgnum++) {
- if (is_selected(mp, msgnum)) {
- if (debugsw)
- advise(NULL, "annotate message %d", msgnum);
- annotate(m_name(msgnum), annotext, cp, inplace,
- 1, -2, 0);
- }
- }
-
- free(cp);
-
-oops:
- folder_free(mp); /* free folder/message structure */
-}
-
-
-static void
-armed_done(int status)
-{
- longjmp(env, status ? status : NOTOK);
-
- exit(status);
-}
projects / mmh / blobdiff