X-Git-Url: https://diplodocus.org/git/nmh/blobdiff_plain/487ad115de1c5a97ab4e61bbf3f3bbbdbd97b258..f345b9b480296b4b6a8469d6221752893c5d1420:/uip/sendsbr.c diff --git a/uip/sendsbr.c b/uip/sendsbr.c index 10b5f9bd..6bfc548e 100644 --- a/uip/sendsbr.c +++ b/uip/sendsbr.c @@ -10,11 +10,11 @@ #include #include #include -#include #include #include #include #include +#include #ifdef HAVE_SYS_TIME_H # include @@ -35,20 +35,6 @@ char *distfile = NULL; static jmp_buf env; -static char body_file_name[PATH_MAX + 1]; /* name of temporary file for body content */ -static char composition_file_name[PATH_MAX + 1]; /* name of mhbuild composition temporary file */ -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 *, char *, struct stat *, int, char *, int); -char *getusername (void); - /* * static prototypes */ @@ -60,54 +46,49 @@ static void annoaux (int); static int splitmsg (char **, int, char *, char *, struct stat *, int); static int sendaux (char **, int, char *, char *, struct stat *); -static int attach(char *, char *, int); -static void clean_up_temporary_files(void); -static int get_line(void); -static void make_mime_composition_file_entry(char *, int, char *); - /* * Entry point into (back-end) routines to send message. */ int -sendsbr (char **vec, int vecp, char *program, char *drft, struct stat *st, - int rename_drft, char *attachment_header_field_name, int attachformat) +sendsbr (char **vec, int vecp, char *program, char *draft, struct stat *st, + int rename_drft) { - int status; + int status, i; + pid_t child; char buffer[BUFSIZ], file[BUFSIZ]; struct stat sts; - 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; + char **buildvec, *buildprogram; + char *volatile drft = draft; /* - * There might be attachments if a header field name for attachments is supplied. - * 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. + * Run the mimebuildproc (which is by default mhbuild) on the message + * with the addition of the "-auto" flag */ - if (attachment_header_field_name != (char *)0) { - switch (attach(attachment_header_field_name, drft, attachformat)) { - case OK: - drft = composition_file_name; - break; + switch (child = fork()) { + case NOTOK: + adios("fork", "unable to"); + break; - case NOTOK: - return (NOTOK); + case OK: + buildvec = argsplit(buildmimeproc, &buildprogram, &i); + buildvec[i++] = "-auto"; + if (distfile) + buildvec[i++] = "-dist"; + buildvec[i++] = (char *) drft; + buildvec[i] = NULL; + execvp(buildprogram, buildvec); + fprintf(stderr, "unable to exec "); + perror(buildmimeproc); + _exit(-1); + break; - case DONE: - break; - } + default: + if (pidXwait(child, buildmimeproc)) + return NOTOK; + break; } done=armed_done; @@ -118,10 +99,11 @@ sendsbr (char **vec, int vecp, char *program, char *drft, struct stat *st, * rename the draft file. I'm not quite sure why. */ if (pushsw && unique) { - char *cp = m_mktemp2(drft, invo_name, NULL, NULL); - if (cp == NULL) { - adios ("sendsbr", "unable to create temporary file"); - } + char *cp = m_mktemp2(drft, invo_name, NULL, NULL); + if (cp == NULL) { + adios(NULL, "unable to create temporary file in %s", + get_temp_dir()); + } if (rename (drft, strncpy(file, cp, sizeof(file))) == NOTOK) adios (file, "unable to rename %s to", drft); drft = file; @@ -131,16 +113,18 @@ sendsbr (char **vec, int vecp, char *program, char *drft, struct stat *st, * Check if we need to split the message into * multiple messages of type "message/partial". */ - if (splitsw >= 0 && !distfile && stat (drft, &sts) != NOTOK + if (splitsw >= 0 && !distfile && stat ((char *) drft, &sts) != NOTOK && sts.st_size >= CPERMSG) { - status = splitmsg (vec, vecp, program, drft, st, splitsw) ? NOTOK : OK; + status = splitmsg (vec, vecp, program, drft, + st, splitsw) ? NOTOK : OK; } else { status = sendaux (vec, vecp, program, 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) + rename (drft, strncpy (buffer, m_backup (drft), + sizeof(buffer))) == NOTOK) advise (buffer, "unable to rename %s to", drft); break; @@ -151,433 +135,11 @@ sendsbr (char **vec, int vecp, char *program, char *drft, struct stat *st, 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((char *)0, "unable to remove original composition file."); - - else { - if ((p = strrchr(composition_file_name, '/')) == (char *)0) - p = composition_file_name; - else - p++; - - (void)strcpy(body_file_name, p); - *p++ = ','; - (void)strcpy(p, body_file_name); - (void)strcat(p, ".orig"); - - (void)unlink(composition_file_name); - } - } + (void) m_unlink (distfile); return status; } -static int -attach(char *attachment_header_field_name, char *draft_file_name, - int attachformat) -{ - char buf[PATH_MAX + 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 length; /* length of attachment header field name */ - char *p; /* miscellaneous string pointer */ - FILE *fp; /* pointer for mhn.defaults */ - - /* - * Open up the draft file. - */ - - if ((draft_file = fopen(draft_file_name, "r")) == (FILE *)0) - adios((char *)0, "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 a header field name, with a non-empty - * body, that matches the -attach argument. 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(attachment_header_field_name); - - has_attachment = 0; - - while (get_line() != EOF && *field != '\0' && *field != '-') { - if (strncasecmp(field, attachment_header_field_name, length) == 0 && - field[length] == ':') { - for (p = field + length + 1; *p == ' ' || *p == '\t'; p++) - ; - if (strlen (p) > 0) { - has_attachment = 1; - } - } - } - - if (has_attachment == 0) - return (DONE); - - /* - * We have at least one attachment. Look for at least one non-blank line - * in the body of the message which indicates content in the body. - */ - - has_body = 0; - - while (get_line() != EOF) { - for (p = field; *p != '\0'; p++) { - if (*p != ' ' && *p != '\t') { - has_body = 1; - break; - } - } - - if (has_body) - break; - } - - /* - * Make names for the temporary files. - */ - - (void)strncpy(body_file_name, - m_mktemp(m_maildir(invo_name), NULL, NULL), - sizeof (body_file_name)); - (void)strncpy(composition_file_name, - m_mktemp(m_maildir(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 == (FILE *)0) || composition_file == (FILE *)0) { - clean_up_temporary_files(); - adios((char *)0, "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 != '\0' && *field != '-') - if (strncasecmp(field, attachment_header_field_name, length) != 0 || - field[length] != ':') - (void)fprintf(composition_file, "%s\n", field); - - (void)fputs("--------\n", composition_file); - - /* - * Copy the message body to a temporary file. - */ - - if (has_body) { - while ((c = getc(draft_file)) != EOF) - putc(c, body_file); - - (void)fclose(body_file); - } - - /* - * Add a mhbuild MIME composition file line for the body if there was one. - * Set the default content type to text/plain so that mhbuild takes care - * of any necessary encoding. - */ - - if (has_body) - make_mime_composition_file_entry(body_file_name, attachformat, - "text/plain"); - - /* - * 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. - */ - - if ((fp = fopen (p = etcpath ("mhn.defaults"), "r"))) { - readconfig ((struct node **) NULL, fp, p, 0); - fclose(fp); - } - - rewind(draft_file); - - while (get_line() != EOF && *field != '\0' && *field != '-') { - if (strncasecmp(field, attachment_header_field_name, length) == 0 && - field[length] == ':') { - for (p = field + length + 1; *p == ' ' || *p == '\t'; p++) - ; - - /* Skip empty attachment_header_field_name lines. */ - if (strlen (p) > 0) { - struct stat st; - if (stat (p, &st) == OK) { - if (S_ISREG (st.st_mode)) { - /* Don't set the default content type so take - make_mime_composition_file_entry() will try - to infer it from the file type. */ - make_mime_composition_file_entry(p, attachformat, 0); - } else { - adios (NULL, "unable to attach %s, not a plain file", - p); - } - } else { - adios (NULL, "unable to access file \"%s\"", p); - } - } - } - } - - (void)fclose(composition_file); - - /* - * We're ready to roll! Run mhbuild on the composition file. - * Note that mhbuild is in the context as buildmimeproc. - */ - - (void)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) -{ - (void)unlink(body_file_name); - (void)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') { - (void)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, int attachformat, - char *default_content_type) -{ - int binary; /* binary character found flag */ - int c; /* current character */ - char cmd[PATH_MAX + 6]; /* file command buffer */ - char *content_type; /* mime content type */ - FILE *fp; /* content and pipe file pointer */ - struct node *np; /* context scan node pointer */ - char *p; /* miscellaneous string pointer */ - struct stat st; /* file status buffer */ - - content_type = default_content_type; - - /* - * Check the file name for a suffix. Scan the context for that suffix on a - * mhshow-suffix- entry. We use these entries to be compatible with mhnshow, - * and there's no reason to make the user specify each suffix twice. Context - * entries of the form "mhshow-suffix-contenttype" in the name have the suffix - * in the field, including the dot. - */ - - if ((p = strrchr(file_name, '.')) != (char *)0) { - for (np = m_defs; np; np = np->n_next) { - if (strncasecmp(np->n_name, "mhshow-suffix-", 14) == 0 && - strcasecmp(p, np->n_field ? np->n_field : "") == 0) { - content_type = np->n_name + 14; - break; - } - } - } - - /* - * No content type was found, either because there was no matching entry in the - * context or because the file name has no suffix. Open the file and check for - * non-ASCII characters. Choose the content type based on this check. - */ - - if (content_type == (char *)0) { - if ((fp = fopen(file_name, "r")) == (FILE *)0) { - clean_up_temporary_files(); - adios((char *)0, "unable to access file \"%s\"", file_name); - } - - binary = 0; - - while ((c = getc(fp)) != EOF) { - if (c > 127 || c < 0) { - binary = 1; - break; - } - } - - (void)fclose(fp); - - content_type = binary ? "application/octet-stream" : "text/plain"; - } - - /* - * Make sure that the attachment file exists and is readable. Append a mhbuild - * directive to the draft file. This starts with the content type. Append a - * file name attribute and a private x-unix-mode attribute. Also append a - * description obtained (if possible) by running the "file" command on the file. - */ - - if (stat(file_name, &st) == -1 || access(file_name, R_OK) != 0) { - clean_up_temporary_files(); - adios((char *)0, "unable to access file \"%s\"", file_name); - } - - switch (attachformat) { - case 0: - /* Insert name, file mode, and Content-Id. */ - (void)fprintf(composition_file, "#%s; name=\"%s\"; x-unix-mode=0%.3ho", - content_type, ((p = strrchr(file_name, '/')) == (char *)0) ? file_name : p + 1, (unsigned short)(st.st_mode & 0777)); - - if (strlen(file_name) > PATH_MAX) { - clean_up_temporary_files(); - adios((char *)0, "attachment file name `%s' too long.", file_name); - } - - (void)sprintf(cmd, "file '%s'", file_name); - - if ((fp = popen(cmd, "r")) != (FILE *)0 && fgets(cmd, sizeof (cmd), fp) != (char *)0) { - *strchr(cmd, '\n') = '\0'; - - /* - * The output of the "file" command is of the form - * - * file: description - * - * Strip off the "file:" and subsequent white space. - */ - - for (p = cmd; *p != '\0'; p++) { - if (*p == ':') { - for (p++; *p != '\0'; p++) { - if (*p != '\t') - break; - } - break; - } - } - - if (*p != '\0') - /* Insert Content-Description. */ - (void)fprintf(composition_file, " [ %s ]", p); - - (void)pclose(fp); - } - - break; - case 1: - if (stringdex (m_maildir(invo_name), file_name) == 0) { - /* Content had been placed by send into a temp file. - Don't generate Content-Disposition header, because - it confuses Microsoft Outlook, Build 10.0.6626, at - least. */ - (void) fprintf (composition_file, "#%s <>", content_type); - } else { - /* Suppress Content-Id, insert simple Content-Disposition - and Content-Description with filename. */ - p = strrchr(file_name, '/'); - (void) fprintf (composition_file, - "#%s; name=\"%s\" <> [%s]{attachment}", - content_type, - (p == (char *)0) ? file_name : p + 1, - (p == (char *)0) ? file_name : p + 1); - } - - break; - case 2: - if (stringdex (m_maildir(invo_name), file_name) == 0) { - /* Content had been placed by send into a temp file. - Don't generate Content-Disposition header, because - it confuses Microsoft Outlook, Build 10.0.6626, at - least. */ - (void) fprintf (composition_file, "#%s <>", content_type); - } else { - /* Suppress Content-Id, insert Content-Disposition with - modification date and Content-Description wtih filename. */ - p = strrchr(file_name, '/'); - (void) fprintf (composition_file, - "#%s; name=\"%s\" <>[%s]{attachment; modification-date=\"%s\"}", - content_type, - (p == (char *)0) ? file_name : p + 1, - (p == (char *)0) ? file_name : p + 1, - dtime (&st.st_mtime, 0)); - } - - break; - default: - adios ((char *)0, "unsupported attachformat %d", attachformat); - } - - /* - * Finish up with the file name. - */ - - (void)fprintf(composition_file, " %s\n", file_name); - - return; -} - /* * Split large message into several messages of * type "message/partial" and send them. @@ -632,7 +194,7 @@ splitmsg (char **vec, int vecp, char *program, char *drft, * of message/partials. For the "Subject" header * field, we also record it, so that a modified * version of it, can be copied to the header - * of each messsage/partial in the collection. + * of each message/partial in the collection. */ if (!strcasecmp (name, "Subject")) { size_t sublen; @@ -725,10 +287,10 @@ splitmsg (char **vec, int vecp, char *program, char *drft, char *cp = m_mktemp2(drft, invo_name, NULL, &out); if (cp == NULL) { - adios (drft, "unable to create temporary file for"); + adios(NULL, "unable to create temporary file in %s", + get_temp_dir()); } strncpy(tmpdrf, cp, sizeof(tmpdrf)); - chmod (tmpdrf, 0600); /* * Output the header fields @@ -792,7 +354,7 @@ splitmsg (char **vec, int vecp, char *program, char *drft, snprintf (partnum, sizeof(partnum), "%d", partno); status = sendaux (vec, vecp, program, tmpdrf, st); - unlink (tmpdrf); + (void) m_unlink (tmpdrf); if (status != OK) break; @@ -827,16 +389,17 @@ sendaux (char **vec, int vecp, char *program, char *drft, struct stat *st) fd = pushsw ? tmp_fd () : NOTOK; fd2 = NOTOK; - vec[vecp++] = drft; if (annotext) { if ((fd2 = tmp_fd ()) != NOTOK) { vec[vecp++] = "-idanno"; snprintf (buf, sizeof(buf), "%d", fd2); vec[vecp++] = buf; } else { - admonish (NULL, "unable to create file for annotation list"); + admonish (NULL, "unable to create temporary file in %s " + "for annotation list", get_temp_dir()); } } + vec[vecp++] = drft; if (distfile && distout (drft, distfile, backup) == NOTOK) done (1); vec[vecp] = NULL; @@ -866,7 +429,6 @@ sendaux (char **vec, int vecp, char *program, char *drft, struct stat *st) fprintf (stderr, "unable to exec "); perror (postproc); _exit (-1); - break; /* NOT REACHED */ default: /* @@ -890,7 +452,7 @@ sendaux (char **vec, int vecp, char *program, char *drft, struct stat *st) if (annotext && fd2 != NOTOK) close (fd2); if (distfile) { - unlink (drft); + (void) m_unlink (drft); if (rename (backup, drft) == NOTOK) advise (drft, "unable to rename %s to", backup); } @@ -936,13 +498,19 @@ alert (char *file, int out) } else { lseek (out, (off_t) 0, SEEK_END); strncpy (buf, "\nMessage not delivered to anyone.\n", sizeof(buf)); - write (out, buf, strlen (buf)); + if (write (out, buf, strlen (buf)) < 0) { + advise (file, "write"); + } strncpy (buf, "\n------- Unsent Draft\n\n", sizeof(buf)); - write (out, buf, strlen (buf)); + if (write (out, buf, strlen (buf)) < 0) { + advise (file, "write"); + } cpydgst (in, out, file, "temporary file"); close (in); strncpy (buf, "\n------- End of Unsent Draft\n", sizeof(buf)); - write (out, buf, strlen (buf)); + if (write (out, buf, strlen (buf)) < 0) { + advise (file, "write"); + } if (rename (file, strncpy (buf, m_backup (file), sizeof(buf))) == NOTOK) admonish (buf, "unable to rename %s to", file); } @@ -976,16 +544,14 @@ static int tmp_fd (void) { int fd; - char *tfile = NULL; + char *tfile; - tfile = m_mktemp2(NULL, invo_name, &fd, NULL); - if (tfile == NULL) return NOTOK; - fchmod(fd, 0600); + if ((tfile = m_mktemp2(NULL, invo_name, &fd, NULL)) == NULL) return NOTOK; if (debugsw) advise (NULL, "temporary file %s selected", tfile); else - if (unlink (tfile) == NOTOK) + if (m_unlink (tfile) == NOTOK) advise (tfile, "unable to remove"); return fd; @@ -1028,6 +594,8 @@ anno (int fd, struct stat *st) sigaddset (&set, SIGTERM); sigprocmask (SIG_BLOCK, &set, &oset); + unregister_for_removal(0); + annoaux (fd); if (child_id == OK) _exit (0); @@ -1035,7 +603,9 @@ anno (int fd, struct stat *st) /* reset the signal mask */ sigprocmask (SIG_SETMASK, &oset, &set); - chdir (cwd); + if (chdir (cwd) < 0) { + advise (cwd, "chdir"); + } break; default: /* no waiting... */ @@ -1136,6 +706,4 @@ static void armed_done (int status) { longjmp (env, status ? status : NOTOK); - - exit (status); }