#endif
#include <utils.h>
+static char *base64set = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
+static int base64rev[] = {
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63,
+ 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1,
+ -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
+ 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1,
+ -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,
+ 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+};
+
void _sizebuf(struct buffer *buf, size_t wanted, size_t el)
{
size_t n;
{
char **c;
+ if(ca == NULL)
+ return;
for(c = ca; *c; c++)
free(*c);
free(ca);
}
+
+int calen(char **a)
+{
+ int i;
+
+ for(i = 0; *a; a++, i++);
+ return(i);
+}
+
+void bvprintf(struct charbuf *buf, char *format, va_list al)
+{
+ va_list al2;
+ int ret;
+
+ while(1) {
+ va_copy(al2, al);
+ ret = vsnprintf(buf->b + buf->d, buf->s - buf->d, format, al2);
+ va_end(al2);
+ if(ret < buf->s - buf->d) {
+ buf->d += ret;
+ return;
+ }
+ sizebuf(*buf, buf->d + ret + 1);
+ }
+}
+
+void bprintf(struct charbuf *buf, char *format, ...)
+{
+ va_list args;
+
+ va_start(args, format);
+ bvprintf(buf, format, args);
+ va_end(args);
+}
+
+void replstr(char **p, char *n)
+{
+ char *tmp;
+
+ tmp = *p;
+ if(n)
+ *p = sstrdup(n);
+ else
+ *p = NULL;
+ if(tmp)
+ free(tmp);
+}
+
+char *base64encode(char *data, size_t datalen)
+{
+ struct charbuf buf;
+
+ if(datalen == 0)
+ return(sstrdup(""));
+ bufinit(buf);
+ while(datalen >= 3)
+ {
+ bufadd(buf, base64set[(data[0] & 0xfc) >> 2]);
+ bufadd(buf, base64set[((data[0] & 0x03) << 4) | ((data[1] & 0xf0) >> 4)]);
+ bufadd(buf, base64set[((data[1] & 0x0f) << 2) | ((data[2] & 0xc0) >> 6)]);
+ bufadd(buf, base64set[data[2] & 0x3f]);
+ datalen -= 3;
+ data += 3;
+ }
+ if(datalen == 1)
+ {
+ bufadd(buf, base64set[(data[0] & 0xfc) >> 2]);
+ bufadd(buf, base64set[(data[0] & 0x03) << 4]);
+ bufcat(buf, "==", 2);
+ }
+ if(datalen == 2)
+ {
+ bufadd(buf, base64set[(data[0] & 0xfc) >> 2]);
+ bufadd(buf, base64set[((data[0] & 0x03) << 4) | ((data[1] & 0xf0) >> 4)]);
+ bufadd(buf, base64set[(data[1] & 0x0f) << 2]);
+ bufadd(buf, '=');
+ }
+ bufadd(buf, 0);
+ return(buf.b);
+}
+
+char *base64decode(char *data, size_t *datalen)
+{
+ int b, c;
+ char cur;
+ struct charbuf buf;
+
+ bufinit(buf);
+ cur = 0;
+ b = 8;
+ for(; *data > 0; data++)
+ {
+ c = (int)(unsigned char)*data;
+ if(c == '=')
+ break;
+ if(c == '\n')
+ continue;
+ if(base64rev[c] == -1)
+ {
+ buffree(buf);
+ return(NULL);
+ }
+ b -= 6;
+ if(b <= 0)
+ {
+ cur |= base64rev[c] >> -b;
+ bufadd(buf, cur);
+ b += 8;
+ cur = 0;
+ }
+ cur |= base64rev[c] << b;
+ }
+ if(datalen != NULL)
+ *datalen = buf.d;
+ bufadd(buf, 0);
+ return(buf.b);
+}