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@ -1,4 +1,5 @@ |
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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 "str.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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int fd=0; |
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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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char line[1000]; /* uuencoded lines can never be longer than 64 characters */ |
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int l; |
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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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fd=open_read(argv[1]); |
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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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if (ofd>=0) { |
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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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} |
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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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if (ofd>=0) { |
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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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} |
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++found; |
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} |
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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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++l; |
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mode=UUDECODE; |
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foundfilename: |
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if (line[l]=='"') { |
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int m; |
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++l; |
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@ -72,7 +79,10 @@ again: |
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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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if (line[l]) { |
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ofd=open_excl(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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if (ofd<0) { |
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buffer_puts(buffer_2,"error: could not create file \""); |
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buffer_puts(buffer_2,line+l); |
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@ -90,7 +100,62 @@ again: |
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} else if (str_equal(line,"end")) { |
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if (ofd>=0) { |
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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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ofd=-1; |
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} |
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@ -102,8 +167,25 @@ again: |
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state=SKIPHEADER; |
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} else { |
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unsigned int scanned,x; |
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char tmp[100]; |
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x=scan_uuencoded(line,tmp,&scanned); |
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char tmp[300]; |
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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 (state==AFTERBEGIN) { |
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buffer_puts(buffer_1,"parse error in line "); |
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