--- /dev/null
+/*
+
+ Encode or decode file as MIME base64 (RFC 1341)
+
+ by John Walker
+ http://www.fourmilab.ch/
+
+ This program is in the public domain.
+
+*/
+
+#define REVDATE "11th August 1997"
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <string.h>
+
+#define TRUE 1
+#define FALSE 0
+
+#define LINELEN 72 /* Encoded line length (max 76) */
+
+typedef unsigned char byte; /* Byte type */
+
+static FILE *fi = stdin; /* Input file */
+static FILE *fo = stdout; /* Output file */
+static byte iobuf[256]; /* I/O buffer */
+static int iolen = 0; /* Bytes left in I/O buffer */
+static int iocp = 256; /* Character removal pointer */
+static int ateof = FALSE; /* EOF encountered */
+static byte dtable[256]; /* Encode / decode table */
+static int linelength = 0; /* Length of encoded output line */
+static char eol[] = "\r\n"; /* End of line sequence */
+static int errcheck = TRUE; /* Check decode input for errors ? */
+
+/* INBUF -- Fill input buffer with data */
+
+static int inbuf(void)
+{
+ int l;
+
+ if (ateof) {
+ return FALSE;
+ }
+ l = fread(iobuf, 1, 256, fi); /* Read input buffer */
+ if (l <= 0) {
+ if (ferror(fi)) {
+ exit(1);
+ }
+ ateof = TRUE;
+ return FALSE;
+ }
+ iolen = l;
+ iocp = 0;
+ return TRUE;
+}
+
+/* INCHAR -- Return next character from input */
+
+static int inchar(void)
+{
+ if (iocp >= iolen) {
+ if (!inbuf()) {
+ return EOF;
+ }
+ }
+
+ return iobuf[iocp++];
+}
+
+/* OCHAR -- Output an encoded character, inserting line breaks
+ where required. */
+
+static void ochar(int c)
+{
+ if (linelength >= LINELEN) {
+ if (fputs(eol, fo) == EOF) {
+ exit(1);
+ }
+ linelength = 0;
+ }
+ if (putc(((byte) c), fo) == EOF) {
+ exit(1);
+ }
+ linelength++;
+}
+
+/* ENCODE -- Encode binary file into base64. */
+
+static void encode(void)
+{
+ int i, hiteof = FALSE;
+
+ /* Fill dtable with character encodings. */
+
+ for (i = 0; i < 26; i++) {
+ dtable[i] = 'A' + i;
+ dtable[26 + i] = 'a' + i;
+ }
+ for (i = 0; i < 10; i++) {
+ dtable[52 + i] = '0' + i;
+ }
+ dtable[62] = '+';
+ dtable[63] = '/';
+
+ while (!hiteof) {
+ byte igroup[3], ogroup[4];
+ int c, n;
+
+ igroup[0] = igroup[1] = igroup[2] = 0;
+ for (n = 0; n < 3; n++) {
+ c = inchar();
+ if (c == EOF) {
+ hiteof = TRUE;
+ break;
+ }
+ igroup[n] = (byte) c;
+ }
+ if (n > 0) {
+ ogroup[0] = dtable[igroup[0] >> 2];
+ ogroup[1] = dtable[((igroup[0] & 3) << 4) | (igroup[1] >> 4)];
+ ogroup[2] = dtable[((igroup[1] & 0xF) << 2) | (igroup[2] >> 6)];
+ ogroup[3] = dtable[igroup[2] & 0x3F];
+
+ /* Replace characters in output stream with "=" pad
+ characters if fewer than three characters were
+ read from the end of the input stream. */
+
+ if (n < 3) {
+ ogroup[3] = '=';
+ if (n < 2) {
+ ogroup[2] = '=';
+ }
+ }
+ for (i = 0; i < 4; i++) {
+ ochar(ogroup[i]);
+ }
+ }
+ }
+ if (fputs(eol, fo) == EOF) {
+ exit(1);
+ }
+}
+
+/* INSIG -- Return next significant input */
+
+static int insig(void)
+{
+ int c;
+
+ /*CONSTANTCONDITION*/
+ while (TRUE) {
+ c = inchar();
+ if (c == EOF || (c > ' ')) {
+ return c;
+ }
+ }
+ /*NOTREACHED*/
+}
+
+/* DECODE -- Decode base64. */
+
+static void decode(void)
+{
+ int i;
+
+ for (i = 0; i < 255; i++) {
+ dtable[i] = 0x80;
+ }
+ for (i = 'A'; i <= 'Z'; i++) {
+ dtable[i] = 0 + (i - 'A');
+ }
+ for (i = 'a'; i <= 'z'; i++) {
+ dtable[i] = 26 + (i - 'a');
+ }
+ for (i = '0'; i <= '9'; i++) {
+ dtable[i] = 52 + (i - '0');
+ }
+ dtable['+'] = 62;
+ dtable['/'] = 63;
+ dtable['='] = 0;
+
+ /*CONSTANTCONDITION*/
+ while (TRUE) {
+ byte a[4], b[4], o[3];
+
+ for (i = 0; i < 4; i++) {
+ int c = insig();
+
+ if (c == EOF) {
+ if (errcheck && (i > 0)) {
+ fprintf(stderr, "Input file incomplete.\n");
+ exit(1);
+ }
+ return;
+ }
+ if (dtable[c] & 0x80) {
+ if (errcheck) {
+ fprintf(stderr, "Illegal character '%c' in input file.\n", c);
+ exit(1);
+ }
+ /* Ignoring errors: discard invalid character. */
+ i--;
+ continue;
+ }
+ a[i] = (byte) c;
+ b[i] = (byte) dtable[c];
+ }
+ o[0] = (b[0] << 2) | (b[1] >> 4);
+ o[1] = (b[1] << 4) | (b[2] >> 2);
+ o[2] = (b[2] << 6) | b[3];
+ i = a[2] == '=' ? 1 : (a[3] == '=' ? 2 : 3);
+ if (fwrite(o, i, 1, fo) == EOF) {
+ exit(1);
+ }
+ if (i < 3) {
+ return;
+ }
+ }
+}
+
+/* USAGE -- Print how-to-call information. */
+
+static void usage(char *pname)
+{
+ fprintf(stderr, "%s -- Encode/decode file as base64. Call:\n", pname);
+ fprintf(stderr,
+ " %s [-e[ncode] / -d[ecode]] [-n] [infile] [outfile]\n", pname);
+ fprintf(stderr, "\n");
+ fprintf(stderr, "Options:\n");
+ fprintf(stderr, " -D Decode base64 encoded file\n");
+ fprintf(stderr, " -E Encode file into base64\n");
+ fprintf(stderr, " -N Ignore errors when decoding\n");
+ fprintf(stderr, " -U Print this message\n");
+ fprintf(stderr, "\n");
+ fprintf(stderr, "by John Walker\n");
+ fprintf(stderr, " WWW: http://www.fourmilab.ch/\n");
+}
+
+/* Main program */
+
+int main(int argc, char *argv[])
+{
+ int i, f = 0, decoding = FALSE;
+ char *cp, opt;
+
+ for (i = 1; i < argc; i++) {
+ cp = argv[i];
+ if (*cp == '-') {
+ opt = *(++cp);
+ if (islower(opt)) {
+ opt = toupper(opt);
+ }
+ switch (opt) {
+
+ case 'D': /* -D Decode */
+ decoding = TRUE;
+ break;
+
+ case 'E': /* -E Encode */
+ decoding = FALSE;
+ break;
+
+ case 'N': /* -N Suppress error checking */
+ errcheck = FALSE;
+ break;
+
+ case 'U': /* -U Print how-to-call information */
+ case '?':
+ usage(argv[0]);
+ return 0;
+ }
+ } else {
+ switch (f) {
+
+ /** Warning! On systems which distinguish text mode and
+ binary I/O (MS-DOS, Macintosh, etc.) the modes in these
+ open statements will have to be made conditional based
+ upon whether an encode or decode is being done, which
+ will have to be specified earlier. But it's worse: if
+ input or output is from standard input or output, the
+ mode will have to be changed on the fly, which is
+ generally system and compiler dependent. 'Twasn't me
+ who couldn't conform to Unix CR/LF convention, so
+ don't ask me to write the code to work around
+ Apple and Microsoft's incompatible standards. **/
+
+ case 0:
+ if (strcmp(cp, "-") != 0) {
+ if ((fi = fopen(cp, "r")) == NULL) {
+ fprintf(stderr, "Cannot open input file %s\n", cp);
+ return 2;
+ }
+ }
+ f++;
+ break;
+
+ case 1:
+ if (strcmp(cp, "-") != 0) {
+ if ((fo = fopen(cp, "w")) == NULL) {
+ fprintf(stderr, "Cannot open output file %s\n", cp);
+ return 2;
+ }
+ }
+ f++;
+ break;
+
+ default:
+ fprintf(stderr, "Too many file names specified.\n");
+ usage(argv[0]);
+ return 2;
+ }
+ }
+ }
+
+ if (decoding) {
+ decode();
+ } else {
+ encode();
+ }
+ return 0;
+}
#include <stdlib.h>
#include <unistd.h>
-#include <fcntl.h> /* stu */
#include <stdio.h>
#include <signal.h>
#include <sys/types.h>
size_t blocksize;
int write_error = 0;
-
- int stu;
- int stu2 = 0;
-
-
/* If this part is not encoded, send as-is */
if (strlen(encoding)==0) {
CallBack(name, filename, partnum, part_start,
close(sendpipe[1]); /* Close the ends we're not using */
close(recvpipe[0]);
if (!strcasecmp(encoding, "base64"))
- execlp("/usr/local/base64/base64", "base64", "-d", NULL);
+ execlp("./base64", "base64", "-d", NULL);
else if (!strcasecmp(encoding, "7bit"))
execlp("/bin/dd", "dd", NULL);
lprintf(5, "ERROR: cannot exec decoder for %s\n", encoding);
lprintf(9, "Decoded length = %d\n", bytes_recv);
- if (strlen(filename) ==0) sprintf(filename, "noname%d", stu2++);
- chdir("stu");
- stu = creat(filename, 0666);
- write(stu, decoded, bytes_recv);
- close(stu);
- chdir("..");
-
if (bytes_recv > 0)
CallBack(name, filename, partnum, decoded,
content_type, bytes_recv);
projects / citadel.git / commitdiff