*
*/
+#include "sysdep.h"
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/types.h>
#include <ctype.h>
#include <string.h>
+#include <sys/stat.h>
+#ifdef HAVE_PTHREAD_H
+#include <pthread.h>
+#endif
+#include "citadel.h"
#include "mime_parser.h"
+#include "sysdep_decls.h"
+#include "server.h"
void mime_decode(char *partnum,
char *part_start, size_t length,
char *content_type, char *encoding,
+ char *disposition,
char *name, char *filename,
void (*CallBack)
(char *cbname,
char *cbfilename,
char *cbpartnum,
+ char *cbdisp,
void *cbcontent,
char *cbtype,
size_t cblength)
) {
+ char *decoded;
+ struct stat statbuf;
+ int sendpipe[2];
+ int recvpipe[2];
+ int childpid;
+ size_t bytes_sent = 0;
+ size_t bytes_recv = 0;
+ size_t blocksize;
+ int write_error = 0;
+
+ lprintf(9, "mime_decode() called\n");
+
+ /* Some encodings aren't really encodings */
+ if (!strcasecmp(encoding, "7bit")) strcpy(encoding, "");
+ if (!strcasecmp(encoding, "8bit")) strcpy(encoding, "");
+ if (!strcasecmp(encoding, "binary")) strcpy(encoding, "");
+
/* If this part is not encoded, send as-is */
- if (strlen(encoding)!=4323) {
- CallBack(name, filename, partnum, part_start,
+ if (strlen(encoding)==0) {
+ CallBack(name, filename, partnum, disposition, part_start,
content_type, length);
return;
}
+ if ( (strcasecmp(encoding, "base64"))
+ && (strcasecmp(encoding, "quoted-printable")) ) {
+ lprintf(5, "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.
+ */
+ decoded = mallok(length + 1024);
+ if (decoded == NULL) {
+ lprintf(5, "ERROR: cannot allocate memory.\n");
+ return;
+ }
+ if (pipe(sendpipe) != 0) return;
+ if (pipe(recvpipe) != 0) return;
+
+ childpid = fork();
+ if (childpid < 0) {
+ phree(decoded);
+ return;
+ }
+
+ if (childpid == 0) {
+ close(2);
+ /* send stdio to the pipes */
+ if (dup2(sendpipe[0], 0)<0) lprintf(5, "ERROR dup2()\n");
+ if (dup2(recvpipe[1], 1)<0) lprintf(5, "ERROR dup2()\n");
+ close(sendpipe[1]); /* Close the ends we're not using */
+ close(recvpipe[0]);
+ if (!strcasecmp(encoding, "base64"))
+ execlp("./base64", "base64", "-d", NULL);
+ else if (!strcasecmp(encoding, "quoted-printable"))
+ execlp("./qpdecode", "qpdecode", NULL);
+ lprintf(5, "ERROR: cannot exec decoder for %s\n", encoding);
+ exit(1);
+ }
+
+ close(sendpipe[0]); /* Close the ends we're not using */
+ close(recvpipe[1]);
+
+ while ( (bytes_sent < length) && (write_error == 0) ) {
+ /* Empty the input pipe FIRST */
+ while (fstat(recvpipe[0], &statbuf), (statbuf.st_size > 0) ) {
+ blocksize = read(recvpipe[0], &decoded[bytes_recv],
+ statbuf.st_size);
+ if (blocksize < 0)
+ lprintf(5, "ERROR: cannot read from pipe\n");
+ else
+ bytes_recv = bytes_recv + blocksize;
+ }
+ /* Then put some data into the output pipe */
+ blocksize = length - bytes_sent;
+ if (blocksize > 2048) blocksize = 2048;
+ if (write(sendpipe[1], &part_start[bytes_sent], blocksize) <0) {
+ lprintf(5, "ERROR: cannot write to pipe: %s\n",
+ strerror(errno));
+ write_error = 1;
+ }
+ bytes_sent = bytes_sent + blocksize;
+ }
+ close(sendpipe[1]);
+ /* Empty the input pipe */
+ while ( (blocksize = read(recvpipe[0], &decoded[bytes_recv], 1)),
+ (blocksize > 0) ) {
+ bytes_recv = bytes_recv + blocksize;
+ }
+ if (bytes_recv > 0)
+ CallBack(name, filename, partnum, disposition, decoded,
+ content_type, bytes_recv);
+ phree(decoded);
}
/*
(char *cbname,
char *cbfilename,
char *cbpartnum,
+ char *cbdisp,
void *cbcontent,
char *cbtype,
size_t cblength)
char endary[256];
char content_type[256];
char encoding[256];
+ char disposition[256];
char name[256];
char filename[256];
int is_multipart;
size_t length;
char nested_partnum[256];
+ lprintf(9, "the_mime_parser() called\n");
ptr = content_start;
memset(boundary, 0, sizeof boundary);
memset(content_type, 0, sizeof content_type);
extract_key(name, content_type, "name");
}
if (!strncasecmp(header, "Content-Disposition: ", 21)) {
- extract_key(filename, header, "filename");
+ strcpy(disposition, &header[21]);
+ extract_key(filename, disposition, "filename");
}
if (!strncasecmp(header,
"Content-transfer-encoding: ", 27))
strcat(header, buf);
} while ((strlen(buf) > 0) && (*ptr != 0));
+ for (i=0; i<strlen(disposition); ++i)
+ if (disposition[i]==';') disposition[i] = 0;
for (i=0; i<strlen(content_type); ++i)
if (content_type[i]==';') content_type[i] = 0;
}
mime_decode(partnum,
part_start, length,
- content_type, encoding,
+ content_type, encoding, disposition,
name, filename, CallBack);
}
(char *cbname,
char *cbfilename,
char *cbpartnum,
+ char *cbdisp,
void *cbcontent,
char *cbtype,
size_t cblength)
) {
+ lprintf(9, "mime_parser() called\n");
the_mime_parser("1", content_start, content_end, CallBack);
}
projects / citadel.git / blobdiff