security-and-privacy/gnupg
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nearly ready for 0.3.0

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This commit is contained in:
Werner Koch 1998-06-25 10:19:08 +00:00
parent e6ac5acbbf
commit 06fd61d081
52 changed files with 1335 additions and 312 deletions
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26
cipher/dynload.c
View file

@ -34,6 +34,7 @@ typedef struct ext_list {
void *handle; /* handle from dlopen() */
int failed; /* already tried but failed */
void * (*enumfunc)(int, int*, int*, int*);
char *hintstr; /* pointer into name */
char name[1];
} *EXTLIST;
@ -48,12 +49,19 @@ typedef struct {
/****************
* Register an extension module. The last registered module will
* be loaded first.
* be loaded first. A name may have a list of classes
* appended; e.g:
* mymodule.so(1:17,3:20,3:109)
* means that this module provides digest algorithm 17 and public key
* algorithms 20 and 109. This is only a hint but if it is there the
* loader may decide to only load a module which claims to have a
* requested algorithm.
*/
void
register_cipher_extension( const char *fname )
{
EXTLIST r, el;
char *p, *pe;
if( *fname != '/' ) { /* do tilde expansion etc */
char *p ;
@ -70,6 +78,14 @@ register_cipher_extension( const char *fname )
el = m_alloc_clear( sizeof *el + strlen(fname) );
strcpy(el->name, fname );
}
/* check whether we have a class hint */
if( (p=strchr(el->name,'(')) && (pe=strchr(p+1,')')) && !pe[1] ) {
*p = *pe = 0;
el->hintstr = p+1;
}
else
el->hintstr = NULL;
/* check that it is not already registered */
for(r = extensions; r; r = r->next )
if( !compare_filenames(r->name, el->name) ) {
@ -77,8 +93,6 @@ register_cipher_extension( const char *fname )
m_free(el);
return;
}
if( DBG_CIPHER )
log_debug("extension '%s' registered\n", el->name );
/* and register */
el->next = extensions;
extensions = el;
@ -95,6 +109,7 @@ load_extension( EXTLIST el )
int seq = 0;
int class, vers;
el->handle = dlopen(el->name, RTLD_NOW);
if( !el->handle ) {
log_error("%s: error loading extension: %s\n", el->name, dlerror() );
@ -107,7 +122,10 @@ load_extension( EXTLIST el )
}
if( g10_opt_verbose )
log_info("%s: version '%s'\n", el->name, *name );
log_info("%s: %s%s%s%s\n", el->name, *name,
el->hintstr? " (":"",
el->hintstr? el->hintstr:"",
el->hintstr? ")":"");
sym = dlsym(el->handle, "gnupgext_enum_func");
if( (err=dlerror()) ) {