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Allow policy URLs with %-expandos in them. This allows policy URLs like

Browse source 
"http://notary.jabberwocky.com/keysign/%K" to create a per-signature
policy URL.  Use the new generic %-handler for the photo ID stuff as well.

Display policy URLs and notations during signature generation if
--show-policy-url/--show-notation is set.
This commit is contained in:
David Shaw 2002-02-05 00:04:24 +00:00
parent 02fe4b0185
commit 9057172a92
7 changed files with 179 additions and 100 deletions
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108
g10/misc.c
View file

@ -438,3 +438,111 @@ idea_cipher_warn(int show)
warned=1;
}
}
/* The largest string we have an expando for, times two. */
#define LARGEST_EXPANDO ((MAX_FINGERPRINT_LEN*2)*2)
/* Expand %-strings */
char *
pct_expando(const char *string,PKT_public_key *pk)
{
const char *ch=string;
int idx=0,maxlen;
u32 keyid[2]={0,0};
char *ret;
keyid_from_pk(pk,keyid);
maxlen=LARGEST_EXPANDO;
ret=m_alloc(maxlen+1); /* one more to leave room for the trailing \0 */
ret[0]='\0';
while(*ch!='\0')
{
/* 8192 is way bigger than we'll need here */
if(maxlen-idx<LARGEST_EXPANDO && maxlen<8192)
{
maxlen+=LARGEST_EXPANDO;
ret=m_realloc(ret,maxlen+1);
}
if(*ch=='%')
{
ch++;
switch(*ch)
{
case 'k': /* short key id */
if(idx+8>maxlen)
goto fail;
sprintf(&ret[idx],"%08lX",(ulong)keyid[1]);
idx+=8;
break;
case 'K': /* long key id */
if(idx+16>maxlen)
goto fail;
sprintf(&ret[idx],"%08lX%08lX",(ulong)keyid[0],(ulong)keyid[1]);
idx+=16;
break;
case 'f': /* fingerprint */
{
byte array[MAX_FINGERPRINT_LEN];
size_t len;
int i;
fingerprint_from_pk(pk,array,&len);
if(idx+(len*2)>maxlen)
goto fail;
for(i=0;i<len;i++)
{
sprintf(&ret[idx],"%02X",array[i]);
idx+=2;
}
}
break;
case '%':
if(idx+1>maxlen)
goto fail;
ret[idx++]='%';
ret[idx]='\0';
break;
/* Any unknown %-keys (like %i, %o, %I, and %O) are
passed through for later expansion. */
default:
if(idx+2>maxlen)
goto fail;
ret[idx++]='%';
ret[idx++]=*ch;
ret[idx]='\0';
break;
}
}
else
{
if(idx+1>maxlen)
goto fail;
ret[idx++]=*ch;
ret[idx]='\0';
}
ch++;
}
return ret;
fail:
m_free(ret);
return NULL;
}