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@ -1,4 +1,5 @@
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#include <unistd.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include "textcode.h"
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#include "textcode.h"
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#include "str.h"
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#include "str.h"
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#include "buffer.h"
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#include "buffer.h"
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@ -11,11 +12,15 @@ int main(int argc,char* argv[]) {
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buffer fileout;
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buffer fileout;
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int fd=0;
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int fd=0;
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int ofd=-1;
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int ofd=-1;
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int broken_encoder=0;
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int found=0;
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int found=0;
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char line[1000]; /* uuencoded lines can never be longer than 64 characters */
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char line[1000]; /* uuencoded lines can never be longer than 64 characters */
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int l;
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int l;
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enum { BEFOREBEGIN, AFTERBEGIN, SKIPHEADER } state=BEFOREBEGIN;
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enum { BEFOREBEGIN, AFTERBEGIN, SKIPHEADER } state=BEFOREBEGIN;
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unsigned long mode=0,lineno=0;
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enum { UUDECODE, YENC } mode=UUDECODE;
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unsigned long fmode=0,lineno=0;
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unsigned long offset,endoffset,totalsize,linelen; /* used only for yenc */
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if (argc>1) {
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if (argc>1) {
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fd=open_read(argv[1]);
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fd=open_read(argv[1]);
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if (fd<0) {
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if (fd<0) {
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@ -36,7 +41,7 @@ again:
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buffer_putsflush(buffer_1,"!\n");
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buffer_putsflush(buffer_1,"!\n");
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if (ofd>=0) {
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if (ofd>=0) {
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buffer_flush(&fileout);
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buffer_flush(&fileout);
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fchmod(ofd,mode);
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fchmod(ofd,fmode);
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close(ofd);
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close(ofd);
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}
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}
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++found;
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++found;
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@ -55,15 +60,17 @@ again:
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buffer_putsflush(buffer_1,"!\n");
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buffer_putsflush(buffer_1,"!\n");
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if (ofd>=0) {
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if (ofd>=0) {
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buffer_flush(&fileout);
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buffer_flush(&fileout);
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fchmod(ofd,mode);
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fchmod(ofd,fmode);
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close(ofd);
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close(ofd);
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}
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}
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++found;
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++found;
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}
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}
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state=BEFOREBEGIN;
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state=BEFOREBEGIN;
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if (line[l=6+scan_8long(line+6,&mode)]==' ' && mode) {
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if (line[l=6+scan_8long(line+6,&fmode)]==' ' && fmode) {
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int i;
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int i;
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++l;
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++l;
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mode=UUDECODE;
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foundfilename:
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if (line[l]=='"') {
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if (line[l]=='"') {
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int m;
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int m;
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++l;
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++l;
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@ -72,6 +79,9 @@ again:
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if (line[l+(i=str_rchr(line+l,'/'))]) l+=i+1;
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if (line[l+(i=str_rchr(line+l,'/'))]) l+=i+1;
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while (line[l]=='.') ++l;
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while (line[l]=='.') ++l;
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if (line[l]) {
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if (line[l]) {
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if (mode==YENC)
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ofd=open_write(line+l);
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else
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ofd=open_excl(line+l);
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ofd=open_excl(line+l);
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if (ofd<0) {
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if (ofd<0) {
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buffer_puts(buffer_2,"error: could not create file \"");
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buffer_puts(buffer_2,"error: could not create file \"");
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@ -90,7 +100,62 @@ again:
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} else if (str_equal(line,"end")) {
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} else if (str_equal(line,"end")) {
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if (ofd>=0) {
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if (ofd>=0) {
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buffer_flush(&fileout);
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buffer_flush(&fileout);
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fchmod(ofd,mode);
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fchmod(ofd,fmode);
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close(ofd);
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ofd=-1;
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}
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++found;
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state=BEFOREBEGIN;
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continue;
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} else if (str_start(line,"=ybegin ")) {
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char* filename=strstr(line," name=");
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if (!filename) {
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invalidybegin:
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buffer_puts(buffer_2,"invalid =ybegin at line ");
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buffer_putulong(buffer_2,lineno);
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buffer_putsflush(buffer_2,".\n");
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continue;
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}
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l=filename-line+6;
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if (!(filename=strstr(line," size="))) goto invalidybegin;
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if (filename[6+scan_ulong(filename+6,&totalsize)] != ' ') goto invalidybegin;
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if (!(filename=strstr(line," line="))) goto invalidybegin;
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if (filename[6+scan_ulong(filename+6,&linelen)] != ' ') goto invalidybegin;
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mode=YENC;
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goto foundfilename;
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} else if (str_start(line,"=ypart ")) {
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char* tmp=strstr(line," begin=");
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char c;
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if (!tmp) {
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invalidpart:
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buffer_puts(buffer_2,"invalid =ypart at line ");
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buffer_putulong(buffer_2,lineno);
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buffer_putsflush(buffer_2,".\n");
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continue;
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}
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c=tmp[7+scan_ulong(tmp+7,&offset)];
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if (c!=' ' && c!=0) goto invalidpart;
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if (!(tmp=strstr(line," end="))) goto invalidpart;
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c=tmp[5+scan_ulong(tmp+5,&endoffset)];
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if (c!=' ' && c!=0) goto invalidpart;
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--offset; endoffset;
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if (endoffset<offset || endoffset>totalsize) goto invalidpart;
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lseek(ofd,offset,SEEK_SET);
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continue;
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} else if (str_start(line,"=yend")) {
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unsigned long cur;
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if (ofd>=0) {
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off_t rlen;
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buffer_flush(&fileout);
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rlen=lseek(ofd,0,SEEK_CUR)-offset;
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if (rlen != endoffset-offset) {
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int toomuch=rlen-(endoffset-offset);
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buffer_puts(buffer_2,"warning: part size ");
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buffer_putulong(buffer_2,rlen);
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buffer_puts(buffer_2,", expected ");
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buffer_putulong(buffer_2,endoffset-offset);
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buffer_putsflush(buffer_2,"!\n");
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}
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close(ofd);
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close(ofd);
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ofd=-1;
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ofd=-1;
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}
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}
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@ -102,8 +167,25 @@ again:
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state=SKIPHEADER;
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state=SKIPHEADER;
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} else {
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} else {
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unsigned int scanned,x;
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unsigned int scanned,x;
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char tmp[100];
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char tmp[300];
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x=scan_uuencoded(line,tmp,&scanned);
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switch (mode) {
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case UUDECODE: x=scan_uuencoded(line,tmp,&scanned); break;
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case YENC:
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/* work around broken yenc encoders */
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if ((line[0]=='.' && line[1]=='.') ||
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(line[0]=='>' && line[1]=='.')) {
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if (l>linelen && line[l-2]!='=') {
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if (!broken_encoder) {
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broken_encoder=1;
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buffer_putsflush(buffer_2,"compensating for broken encoder...\n");
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}
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x=scan_yenc(line+1,tmp,&scanned);
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break;
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}
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}
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x=scan_yenc(line,tmp,&scanned);
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break;
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}
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if (!x) {
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if (!x) {
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if (state==AFTERBEGIN) {
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if (state==AFTERBEGIN) {
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buffer_puts(buffer_1,"parse error in line ");
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buffer_puts(buffer_1,"parse error in line ");
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