char *unquoteurl(char *in)
{
struct charbuf buf;
char *p;
int c;
bufinit(buf);
p = in;
while(*p) {
if(*p == '%') {
if(!p[1] || !p[2])
goto fail;
c = 0;
if((p[1] >= '0') && (p[1] <= '9')) c |= (p[1] - '0') << 4;
else if((p[1] >= 'a') && (p[1] <= 'f')) c |= (p[1] - 'a' + 10) << 4;
else if((p[1] >= 'A') && (p[1] <= 'F')) c |= (p[1] - 'A' + 10) << 4;
else goto fail;
if((p[2] >= '0') && (p[2] <= '9')) c |= (p[2] - '0');
else if((p[2] >= 'a') && (p[2] <= 'f')) c |= (p[2] - 'a' + 10);
else if((p[2] >= 'A') && (p[2] <= 'F')) c |= (p[2] - 'A' + 10);
else goto fail;
bufadd(buf, c);
p += 3;
} else {
bufadd(buf, *(p++));
}
}
bufadd(buf, 0);
return(buf.b);
fail:
buffree(buf);
return(NULL);
}
static void speed_process (float * * data, int * samples)
{
double pitch = aud_get_double (CFGSECT, "pitch");
double speed = aud_get_double (CFGSECT, "speed");
/* Remove audio that has already been played from the output buffer. */
bufcut (& out, written);
/* Copy the passed audio to the input buffer, scaled to adjust pitch. */
bufadd (& in, * data, * samples / curchans, 1.0 / pitch);
/* If we are ending, add silence to the end of the input signal. */
if (ending)
bufgrow (& in, in.len + width / 2);
/* Calculate the spacing interval for input. */
int instep = round (outstep * speed / pitch);
/* Run the speed change algorithm. */
int src = 0;
int dst = 0;
while (src + MAX (width, instep) <= in.len)
{
bufgrow (& out, dst + width);
out.len = dst + width;
for (int i = 0; i < width; i ++)
for (int c = 0; c < curchans; c ++)
OFFSET (out.mem, dst + i)[c] += OFFSET (in.mem, src + i)[c] * cosine[i];
src += instep;
dst += outstep;
}
/* Remove processed audio from the input buffer. */
bufcut (& in, src);
/* Trim silence from the beginning of the output buffer. */
if (trim > 0)
{
int cut = MIN (trim, dst);
bufcut (& out, cut);
dst -= cut;
trim -= cut;
}
/* If we are ending, return all of the output buffer except the silence that
* we trim from the end of it. */
if (ending)
dst = out.len - width / 2;
/* Return processed audio in the output buffer and mark it to be removed on
* the next call. */
* data = out.mem;
* samples = dst * curchans;
written = dst;
}
static void outplex(struct muth *muth, va_list args)
{
vavar(FILE *, sk);
struct {
struct ch {
FILE *s;
int id;
} *b;
size_t s, d;
} outs;
int i;
struct ch ch;
int type, rid;
char *data;
size_t dlen;
bufinit(outs);
while((ch.s = va_arg(args, FILE *)) != NULL) {
ch.id = va_arg(args, int);
bufadd(outs, ch);
}
data = NULL;
while(1) {
if(recvrec(sk, &type, &rid, &data, &dlen))
goto out;
if(rid != 1)
goto out;
for(i = 0; i < outs.d; i++) {
if(outs.b[i].id == type) {
if(outs.b[i].s != NULL) {
if(dlen == 0) {
fclose(outs.b[i].s);
outs.b[i].s = NULL;
} else {
if(fwrite(data, 1, dlen, outs.b[i].s) != dlen)
goto out;
}
}
break;
}
}
free(data);
data = NULL;
}
out:
if(data != NULL)
free(data);
for(i = 0; i < outs.d; i++) {
if(outs.b[i].s != NULL)
fclose(outs.b[i].s);
}
buffree(outs);
fclose(sk);
}
static void bufcatkv(struct charbuf *dst, char *key, char *val)
{
size_t kl, vl;
if((kl = strlen(key)) < 128) {
bufadd(*dst, kl);
} else {
bufadd(*dst, ((kl & 0x7f000000) >> 24) | 0x80);
bufadd(*dst, (kl & 0x00ff0000) >> 16);
bufadd(*dst, (kl & 0x0000ff00) >> 8);
bufadd(*dst, kl & 0x000000ff);
}
if((vl = strlen(val)) < 128) {
bufadd(*dst, vl);
} else {
bufadd(*dst, ((vl & 0x7f000000) >> 24) | 0x80);
bufadd(*dst, (vl & 0x00ff0000) >> 16);
bufadd(*dst, (vl & 0x0000ff00) >> 8);
bufadd(*dst, vl & 0x000000ff);
}
bufcat(*dst, key, kl);
bufcat(*dst, val, vl);
}
static char *connid(void)
{
static struct charbuf cur;
int i;
char *ret;
for(i = 0; i < cur.d; i++) {
if((++cur.b[i]) > 'Z')
cur.b[i] = 'A';
else
goto done;
}
bufadd(cur, 'A');
done:
ret = memcpy(smalloc(cur.d + 1), cur.b, cur.d);
ret[cur.d] = 0;
return(ret);
}
static struct hthead *parsereq(struct bufio *in)
{
struct hthead *req;
struct charbuf method, url, ver;
int c;
req = NULL;
bufinit(method);
bufinit(url);
bufinit(ver);
while(1) {
c = biogetc(in);
if(c == ' ') {
break;
} else if((c == EOF) || (c < 32) || (c >= 128)) {
goto fail;
} else {
bufadd(method, c);
if(method.d >= 128)
goto fail;
}
}
while(1) {
c = biogetc(in);
if(c == ' ') {
break;
} else if((c == EOF) || (c < 32)) {
goto fail;
} else {
bufadd(url, c);
if(url.d >= 65536)
goto fail;
}
}
while(1) {
c = biogetc(in);
if(c == 10) {
break;
} else if(c == 13) {
} else if((c == EOF) || (c < 32) || (c >= 128)) {
goto fail;
} else {
bufadd(ver, c);
if(ver.d >= 128)
goto fail;
}
}
bufadd(method, 0);
bufadd(url, 0);
bufadd(ver, 0);
req = mkreq(method.b, url.b, ver.b);
if(parseheadersb(req, in))
goto fail;
trimx(req);
goto out;
fail:
if(req != NULL) {
freehthead(req);
req = NULL;
}
out:
buffree(method);
buffree(url);
buffree(ver);
return(req);
}
int main(int argc, char **argv, char **envp)
{
int c;
char *file, *sp;
struct charvbuf prog;
int inpath, addfile, cd;
int infd, outfd;
FILE *in, *out;
char **headers;
pid_t child;
int estat;
environ = envp;
signal(SIGPIPE, SIG_IGN);
bufinit(prog);
inpath = 0;
addfile = 1;
cd = 0;
while((c = getopt(argc, argv, "cp:P:")) >= 0) {
switch(c) {
case 'c':
cd = 1;
break;
case 'p':
bufadd(prog, optarg);
inpath = 1;
break;
case 'P':
prog.d = 0;
bufadd(prog, optarg);
while(1) {
if(optind >= argc) {
flog(LOG_ERR, "callcgi: unterminated argument list for -P");
exit(1);
}
if(!strcmp(argv[optind], ";")) {
optind++;
break;
}
bufadd(prog, argv[optind++]);
}
if(prog.d == 0) {
flog(LOG_ERR, "callcgi: -P option needs at least a program name");
exit(1);
}
inpath = 1;
addfile = 0;
break;
default:
usage();
exit(1);
}
}
if(argc - optind < 3) {
usage();
exit(1);
}
if(((file = getenv("REQ_X_ASH_FILE")) == NULL) && (prog.d == 0)) {
flog(LOG_ERR, "callcgi: needs to be called with the X-Ash-File header");
exit(1);
}
if(cd) {
/* This behavior is encouraged by the CGI specification (RFC 3875, 7.2),
* but not strictly required, and I get the feeling it might break some
* relative paths here or there, so it's not the default for now. */
if((sp = strrchr(file, '/')) != NULL) {
*sp = 0;
if(chdir(file)) {
*sp = '/';
} else {
file = sp + 1;
}
}
}
if(prog.d == 0)
bufadd(prog, file);
if(addfile && (file != NULL))
bufadd(prog, file);
bufadd(prog, NULL);
child = forkchild(inpath, prog.b, file, argv[optind], argv[optind + 1], argv[optind + 2], &infd, &outfd);
in = fdopen(infd, "w");
passdata(stdin, in); /* Ignore errors, perhaps? */
fclose(in);
out = fdopen(outfd, "r");
if((headers = parsecgiheaders(out)) == NULL) {
flog(LOG_WARNING, "CGI handler returned invalid headers");
exit(1);
}
sendstatus(headers, stdout);
sendheaders(headers, stdout);
printf("\n");
if(passdata(out, stdout))
kill(child, SIGINT);
fclose(out);
if(waitpid(child, &estat, 0) == child) {
if(WCOREDUMP(estat))
flog(LOG_WARNING, "CGI handler `%s' dumped core", prog.b[0]);
if(WIFEXITED(estat) && !WEXITSTATUS(estat))
return(0);
else
return(1);
}
flog(LOG_WARNING, "could not wait for CGI handler: %s", strerror(errno));
return(1);
}
struct hthead *parseresponseb(struct bufio *in)
{
struct hthead *req;
int code;
struct charbuf ver, msg;
int c;
req = NULL;
bufinit(ver);
bufinit(msg);
code = 0;
while(1) {
c = biogetc(in);
if(c == ' ') {
break;
} else if((c == EOF) || (c < 32) || (c >= 128)) {
goto fail;
} else {
bufadd(ver, c);
if(ver.d >= 128)
goto fail;
}
}
while(1) {
c = biogetc(in);
if(c == ' ') {
break;
} else if((c == EOF) || (c < '0') || (c > '9')) {
goto fail;
} else {
code = (code * 10) + (c - '0');
if(code >= 10000)
goto fail;
}
}
while(1) {
c = biogetc(in);
if(c == 10) {
break;
} else if(c == 13) {
} else if((c == EOF) || (c < 32)) {
goto fail;
} else {
bufadd(msg, c);
if(msg.d >= 512)
goto fail;
}
}
bufadd(msg, 0);
bufadd(ver, 0);
req = mkresp(code, msg.b, ver.b);
if(parseheadersb(req, in))
goto fail;
goto out;
fail:
if(req != NULL) {
freehthead(req);
req = NULL;
}
out:
buffree(msg);
buffree(ver);
return(req);
}
int parseheadersb(struct hthead *head, struct bufio *in)
{
int c, state;
struct charbuf name, val;
size_t tsz;
bufinit(name);
bufinit(val);
state = 0;
tsz = 0;
while(1) {
c = biogetc(in);
if(++tsz >= 65536)
goto fail;
again:
if(state == 0) {
if(c == '\r') {
} else if(c == '\n') {
break;
} else if(c == EOF) {
goto fail;
} else {
state = 1;
goto again;
}
} else if(state == 1) {
if(c == ':') {
trim(&name);
bufadd(name, 0);
state = 2;
} else if(c == '\r') {
} else if(c == '\n') {
goto fail;
} else if(c == EOF) {
goto fail;
} else {
bufadd(name, c);
}
} else if(state == 2) {
if(c == '\r') {
} else if(c == '\n') {
trim(&val);
bufadd(val, 0);
headappheader(head, name.b, val.b);
buffree(name);
buffree(val);
state = 0;
} else if(c == EOF) {
goto fail;
} else {
bufadd(val, c);
}
}
}
return(0);
fail:
buffree(name);
buffree(val);
return(-1);
}