sys/src/libhttpd/gethead.c

   1 #include <u.h>
   2 #include <libc.h>
   3 #include <bin.h>
   4 #include <httpd.h>
   5
   6 /*
   7  * read in some header lines, either one or all of them.
   8  * copy results into header log buffer.
   9  */
  10 int
  11 hgethead(HConnect *c, int many)
  12 {
  13         Hio *hin;
  14         char *s, *p, *pp;
  15         int n;
  16
  17         hin = &c->hin;
  18         for(;;){
  19                 s = (char*)hin->pos;
  20                 pp = s;
  21                 while(p = memchr(pp, '\n', (char*)hin->stop - pp)){
  22                         if(!many || p == pp || (p == pp + 1 && *pp == '\r')){
  23                                 pp = p + 1;
  24                                 break;
  25                         }
  26                         pp = p + 1;
  27                 }
  28                 hin->pos = (uchar*)pp;
  29                 n = pp - s;
  30                 if(c->hstop + n > &c->header[HBufSize])
  31                         return -1;
  32                 memmove(c->hstop, s, n);
  33                 c->hstop += n;
  34                 *c->hstop = '\0';
  35                 if(p != nil)
  36                         return 0;
  37                 if(hreadbuf(hin, hin->pos) == nil || hin->state == Hend)
  38                         return -1;
  39         }
  40 }