-static int
-attach(char *attachment_header_field_name, char *draft_file_name,
- int attachformat)
-{
- 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 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((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 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] == ':')
- 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.
- */
-
- if (has_body)
- make_mime_composition_file_entry(body_file_name, attachformat);
-
- /*
- * 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 != '\0' && *field != '-') {
- if (strncasecmp(field, attachment_header_field_name, length) == 0 && field[length] == ':') {
- for (p = field + length + 1; *p == ' ' || *p == '\t'; p++)
- ;
-
- make_mime_composition_file_entry(p, attachformat);
- }
- }
-
- (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)
-{
- int binary; /* binary character found flag */
- int c; /* current character */
- char cmd[MAXPATHLEN + 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 = (char *)0;
-
- /*
- * 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 && mh_strcasecmp(p, 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) > MAXPATHLEN) {
- 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. */
- (void) fprintf (composition_file,
- "#%1$s; name=\"%2$s\" <> [%2$s]{attachment}",
- content_type,
- ((p = strrchr(file_name, '/')) == (char *)0) ? file_name : p + 1);
- }
-
- break;
- case 2:
- if (stringdex (m_maildir(invo_name), file_name) == 0) {
- /* Content had been placed by send into a temp file.
- Don't generate Content-Disposition header, because
- it confuses Microsoft Outlook, Build 10.0.6626, at
- least. */
- (void) fprintf (composition_file, "#%s <>", content_type);
- } else {
- /* Suppress Content-Id, insert Content-Disposition with
- modification date and Content-Description wtih filename. */
- (void) fprintf (composition_file,
- "#%1$s; name=\"%2$s\" <>[%2$s]{attachment; modification-date=\"%3$s\"}",
- content_type,
- ((p = strrchr(file_name, '/')) == (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;
-}
-
projects / nmh / blobdiff