*
* This is the MIME parser for Citadel. Sometimes it actually works.
*
- * Copyright (c) 1998-2001 by Art Cancro
+ * Copyright (c) 1998-2003 by Art Cancro
* This code is distributed under the terms of the GNU General Public License.
*
*/
+#include <ctype.h>
#include <stdlib.h>
+#ifdef HAVE_UNISTD_H
#include <unistd.h>
+#endif
#include <stdio.h>
+#ifdef HAVE_FCNTL_H
+#include <fcntl.h>
+#endif
#include <signal.h>
#include <sys/types.h>
-#include <ctype.h>
+#include <sys/wait.h>
+#include <sys/socket.h>
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+#ifdef HAVE_LIMITS_H
+#include <limits.h>
+#endif
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
#include <string.h>
-#include <sys/stat.h>
+#include <pwd.h>
#include <errno.h>
+#include <stdarg.h>
#include <pthread.h>
+#include <signal.h>
#include "webcit.h"
+#include "webserver.h"
+
#include "mime_parser.h"
/*
* Convert "quoted-printable" to binary. Returns number of bytes decoded.
*/
-int decode_quoted_printable(char *decoded, char *encoded, int sourcelen) {
+int CtdlDecodeQuotedPrintable(char *decoded, char *encoded, int sourcelen) {
char buf[SIZ];
int buf_length = 0;
int soft_line_break = 0;
}
return;
}
+
if ((strcasecmp(encoding, "base64"))
&& (strcasecmp(encoding, "quoted-printable"))) {
- fprintf(stderr, "ERROR: unknown MIME encoding '%s'\n", encoding);
return;
}
/*
* Allocate a buffer for the decoded data. The output buffer is the
* same size as the input buffer; this assumes that the decoded data
* will never be larger than the encoded data. This is a safe
- * assumption with base64, uuencode, and quoted-printable. Just to
- * be safe, we still pad the buffer a bit.
+ * assumption with base64, uuencode, and quoted-printable.
*/
- decoded = malloc(length + 1024);
+ decoded = mallok(length+2048);
if (decoded == NULL) {
- fprintf(stderr, "ERROR: cannot allocate memory.\n");
return;
}
if (!strcasecmp(encoding, "base64")) {
- bytes_decoded = decode_base64(decoded, part_start);
+ bytes_decoded = CtdlDecodeBase64(decoded, part_start, length);
}
else if (!strcasecmp(encoding, "quoted-printable")) {
- bytes_decoded = decode_quoted_printable(decoded,
+ bytes_decoded = CtdlDecodeQuotedPrintable(decoded,
part_start, length);
}
content_type, bytes_decoded, "binary", userdata);
}
- free(decoded);
+ phree(decoded);
}
-
-
-
/*
* Break out the components of a multipart message
* (This function expects to be fed HEADERS + CONTENT)
size_t content_length;
char *encoding;
char *disposition;
- char *name;
+ char *name = NULL;
+ char *content_type_name;
+ char *content_disposition_name;
char *filename;
int is_multipart;
int part_seq = 0;
size_t length;
char nested_partnum[SIZ];
- fprintf(stderr, "the_mime_parser() called\n");
ptr = content_start;
content_length = 0;
- boundary = malloc(SIZ);
+ boundary = mallok(SIZ);
memset(boundary, 0, SIZ);
- startary = malloc(SIZ);
+ startary = mallok(SIZ);
memset(startary, 0, SIZ);
- endary = malloc(SIZ);
+ endary = mallok(SIZ);
memset(endary, 0, SIZ);
- header = malloc(SIZ);
+ header = mallok(SIZ);
memset(header, 0, SIZ);
- content_type = malloc(SIZ);
+ content_type = mallok(SIZ);
memset(content_type, 0, SIZ);
- encoding = malloc(SIZ);
+ encoding = mallok(SIZ);
memset(encoding, 0, SIZ);
- name = malloc(SIZ);
- memset(name, 0, SIZ);
+ content_type_name = mallok(SIZ);
+ memset(content_type_name, 0, SIZ);
+
+ content_disposition_name = mallok(SIZ);
+ memset(content_disposition_name, 0, SIZ);
- filename = malloc(SIZ);
+ filename = mallok(SIZ);
memset(filename, 0, SIZ);
- disposition = malloc(SIZ);
+ disposition = mallok(SIZ);
memset(disposition, 0, SIZ);
/* If the caller didn't supply an endpointer, generate one by measure */
/* Learn interesting things from the headers */
strcpy(header, "");
do {
- ptr = memreadline(ptr, buf, sizeof buf);
+ ptr = memreadline(ptr, buf, SIZ);
if (ptr >= content_end) {
goto end_parser;
}
if (!isspace(buf[0])) {
if (!strncasecmp(header, "Content-type: ", 14)) {
strcpy(content_type, &header[14]);
- extract_key(name, content_type, "name");
- fprintf(stderr, "Extracted content-type <%s>\n",
- content_type);
+ extract_key(content_type_name, content_type, "name");
+ /* Deal with weird headers */
+ if (strchr(content_type, ' '))
+ *(strchr(content_type, ' ')) = '\0';
+ if (strchr(content_type, ';'))
+ *(strchr(content_type, ';')) = '\0';
}
if (!strncasecmp(header, "Content-Disposition: ", 21)) {
strcpy(disposition, &header[21]);
+ extract_key(content_disposition_name, disposition, "name");
extract_key(filename, disposition, "filename");
}
if (!strncasecmp(header, "Content-length: ", 16)) {
extract_key(boundary, header, "boundary");
strcpy(header, "");
}
- if ((strlen(header) + strlen(buf) + 2) < sizeof(header))
+ if ((strlen(header) + strlen(buf) + 2) < SIZ)
strcat(header, buf);
} while ((strlen(buf) > 0) && (*ptr != 0));
- for (i = 0; i < strlen(disposition); ++i)
- if (disposition[i] == ';')
- disposition[i] = 0;
- while (isspace(disposition[0]))
- strcpy(disposition, &disposition[1]);
- for (i = 0; i < strlen(content_type); ++i)
- if (content_type[i] == ';')
- content_type[i] = 0;
- while (isspace(content_type[0]))
- strcpy(content_type, &content_type[1]);
+ if (strchr(disposition, ';'))
+ *(strchr(disposition, ';')) = '\0';
+ striplt(disposition);
+ if (strchr(content_type, ';'))
+ *(strchr(content_type, ';')) = '\0';
+ striplt(content_type);
if (strlen(boundary) > 0) {
is_multipart = 1;
is_multipart = 0;
}
- fprintf(stderr, "is_multipart=%d, boundary=<%s>\n",
- is_multipart, boundary);
-
/* If this is a multipart message, then recursively process it */
part_start = NULL;
if (is_multipart) {
}
/* Figure out where the boundaries are */
- sprintf(startary, "--%s", boundary);
- sprintf(endary, "--%s--", boundary);
+ snprintf(startary, SIZ, "--%s", boundary);
+ snprintf(endary, SIZ, "--%s--", boundary);
do {
if ( (!strncasecmp(ptr, startary, strlen(startary)))
|| (!strncasecmp(ptr, endary, strlen(endary))) ) {
- fprintf(stderr, "hit boundary!\n");
if (part_start != NULL) {
if (strlen(partnum) > 0) {
- sprintf(nested_partnum, "%s.%d",
- partnum, ++part_seq);
+ snprintf(nested_partnum,
+ sizeof nested_partnum,
+ "%s.%d", partnum,
+ ++part_seq);
}
else {
- sprintf(nested_partnum, "%d",
- ++part_seq);
+ snprintf(nested_partnum,
+ sizeof nested_partnum,
+ "%d", ++part_seq);
}
the_mime_parser(nested_partnum,
part_start, part_end,
userdata,
dont_decode);
}
- ptr = memreadline(ptr, buf, sizeof(buf));
+ ptr = memreadline(ptr, buf, SIZ);
part_start = ptr;
}
else {
part_end = ptr;
++ptr;
}
- } while ( (strcasecmp(ptr, endary)) && (ptr <= content_end) );
+ /* If we pass out of scope in the MIME multipart (by
+ * hitting the end boundary), force the pointer out
+ * of scope so this loop ends.
+ */
+ if (ptr < content_end) {
+ if (!strcasecmp(ptr, endary)) {
+ ptr = content_end++;
+ }
+ }
+ } while (ptr <= content_end);
if (PostMultiPartCallBack != NULL) {
PostMultiPartCallBack("", "", partnum, "", NULL,
content_type, 0, encoding, userdata);
/* If it's not a multipart message, then do something with it */
if (!is_multipart) {
- fprintf(stderr, "doing non-multipart thing\n");
part_start = ptr;
length = 0;
while (ptr < content_end) {
++length;
}
part_end = content_end;
+ /* fix an off-by-one error */
+ --part_end;
+ --length;
/* Truncate if the header told us to */
if ( (content_length > 0) && (length > content_length) ) {
length = content_length;
- fprintf(stderr, "truncated to %ld\n", (long)content_length);
+ }
+
+ /* Sometimes the "name" field is tacked on to Content-type,
+ * and sometimes it's tacked on to Content-disposition. Use
+ * whichever one we have.
+ */
+ if (strlen(content_disposition_name) > strlen(content_type_name)) {
+ name = content_disposition_name;
+ }
+ else {
+ name = content_type_name;
}
mime_decode(partnum,
}
end_parser: /* free the buffers! end the oppression!! */
- free(boundary);
- free(startary);
- free(endary);
- free(header);
- free(content_type);
- free(encoding);
- free(name);
- free(filename);
- free(disposition);
+ phree(boundary);
+ phree(startary);
+ phree(endary);
+ phree(header);
+ phree(content_type);
+ phree(encoding);
+ phree(content_type_name);
+ phree(content_disposition_name);
+ phree(filename);
+ phree(disposition);
}
-
-
-
-
/*
* Entry point for the MIME parser.
* (This function expects to be fed HEADERS + CONTENT)
)
{
- fprintf(stderr, "mime_parser() called\n");
the_mime_parser("", content_start, content_end,
CallBack,
PreMultiPartCallBack,
PostMultiPartCallBack,
userdata, dont_decode);
}
+
projects / citadel.git / blobdiff