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#75, add txt read/write
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parent
1c8f6e522f
commit
26d59a9886
61
src/read.c
61
src/read.c
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@ -125,6 +125,35 @@ readdata(char *packet, char **src, char *dst, size_t len)
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return len;
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}
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int
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readtxtbin(char *packet, char **src, size_t srcremain, char *dst, size_t dstremain)
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{
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unsigned char *uc;
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int tocopy;
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int dstused = 0;
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while (srcremain > 0)
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{
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uc = (unsigned char*) (*src);
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tocopy = *uc;
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(*src)++;
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srcremain--;
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if (tocopy > srcremain)
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return 0; /* illegal, better have nothing */
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if (tocopy > dstremain)
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return 0; /* doesn't fit, better have nothing */
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memcpy(dst, *src, tocopy);
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dst += tocopy;
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(*src) += tocopy;
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srcremain -= tocopy;
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dstremain -= tocopy;
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dstused += tocopy;
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}
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return dstused;
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}
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int
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putname(char **buf, size_t buflen, const char *host)
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{
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@ -212,3 +241,35 @@ putdata(char **dst, char *data, size_t len)
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return len;
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}
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int
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puttxtbin(char **buf, size_t bufremain, char *from, size_t fromremain)
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{
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unsigned char uc;
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unsigned char *ucp = &uc;
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char *cp = (char *) ucp;
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int tocopy;
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int bufused = 0;
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while (fromremain > 0)
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{
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tocopy = fromremain;
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if (tocopy > 252)
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tocopy = 252; /* allow off-by-1s in caches etc */
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if (tocopy + 1 > bufremain)
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return -1; /* doesn't fit, better have nothing */
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uc = tocopy;
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**buf = *cp;
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(*buf)++;
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bufremain--;
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bufused++;
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memcpy(*buf, from, tocopy);
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(*buf) += tocopy;
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from += tocopy;
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bufremain -= tocopy;
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fromremain -= tocopy;
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bufused += tocopy;
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}
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return bufused;
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}
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@ -21,11 +21,13 @@ int readname(char *, int, char **, char *, size_t);
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int readshort(char *, char **, short *);
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int readlong(char *, char **, uint32_t *);
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int readdata(char *, char **, char *, size_t);
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int readtxtbin(char *, char **, size_t, char *, size_t);
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int putname(char **, size_t, const char *);
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int putbyte(char **, unsigned char);
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int putshort(char **, unsigned short);
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int putlong(char **, uint32_t);
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int putdata(char **, char *, size_t);
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int puttxtbin(char **, size_t, char *, size_t);
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#endif
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