From 4dcc18b102fc85fe2e121161b197250dca60cf92 Mon Sep 17 00:00:00 2001 From: Matthias Kalle Dalheimer Date: Mon, 26 Nov 2001 16:43:00 +0000 Subject: [PATCH] Check for out-of-memory in signature verification --- gpgmeplug/gpgmeplug.c | 60 +++++++++++++++++++++++++------------------ 1 file changed, 35 insertions(+), 25 deletions(-) diff --git a/gpgmeplug/gpgmeplug.c b/gpgmeplug/gpgmeplug.c index 6d2cd25..1136bc7 100644 --- a/gpgmeplug/gpgmeplug.c +++ b/gpgmeplug/gpgmeplug.c @@ -838,10 +838,12 @@ bool checkMessageSignature( const char* ciphertext, /* Provide information in the sigmeta struct */ /* the status string */ statusStr = sig_status_to_string( status ); - // PENDING(kalle) Handle out of memory sigmeta->status = malloc( strlen( statusStr ) + 1 ); - strcpy( sigmeta->status, statusStr ); - sigmeta->status[strlen( statusStr )] = '\0'; + if( sigmeta->status ) { + strcpy( sigmeta->status, statusStr ); + sigmeta->status[strlen( statusStr )] = '\0'; + } else + ; // nothing to do, is already 0 // Extended information for any number of signatures. fpr = gpgme_get_sig_status( ctx, sig_idx, &status, &created ); @@ -850,28 +852,36 @@ bool checkMessageSignature( const char* ciphertext, struct tm* ctime_val; const char* sig_status; - // PENDING(kalle) Handle out of memory - sigmeta->extended_info = realloc( sigmeta->extended_info, - sizeof( struct SignatureMetaDataExtendedInfo ) * ( sig_idx + 1 ) ); - // the creation time - // PENDING(kalle) Handle out of memory - sigmeta->extended_info[sig_idx].creation_time = malloc( sizeof( struct tm ) ); - ctime_val = localtime( &created ); - memcpy( sigmeta->extended_info[sig_idx].creation_time, - ctime_val, sizeof( struct tm ) ); - - err = gpgme_get_sig_key (ctx, sig_idx, &key); - sig_status = sig_status_to_string( status ); - // PENDING(kalle) Handle out of memory - sigmeta->extended_info[sig_idx].status_text = malloc( strlen( sig_status ) + 1 ); - strcpy( sigmeta->extended_info[sig_idx].status_text, - sig_status ); - sigmeta->extended_info[sig_idx].status_text[strlen( sig_status )] = '\0'; - // PENDING(kalle) Handle out of memory - sigmeta->extended_info[sig_idx].fingerprint = malloc( strlen( fpr ) + 1 ); - strcpy( sigmeta->extended_info[sig_idx].fingerprint, fpr ); - sigmeta->extended_info[sig_idx].fingerprint[strlen( fpr )] = '\0'; - + void* realloc_return = realloc( sigmeta->extended_info, + sizeof( struct SignatureMetaDataExtendedInfo ) * ( sig_idx + 1 ) ); + if( realloc_return ) { + sigmeta->extended_info = realloc_return; + // the creation time + sigmeta->extended_info[sig_idx].creation_time = malloc( sizeof( struct tm ) ); + if( sigmeta->extended_info[sig_idx].creation_time ) { + ctime_val = localtime( &created ); + memcpy( sigmeta->extended_info[sig_idx].creation_time, + ctime_val, sizeof( struct tm ) ); + } + + err = gpgme_get_sig_key (ctx, sig_idx, &key); + sig_status = sig_status_to_string( status ); + sigmeta->extended_info[sig_idx].status_text = malloc( strlen( sig_status ) + 1 ); + if( sigmeta->extended_info[sig_idx].status_text ) { + strcpy( sigmeta->extended_info[sig_idx].status_text, + sig_status ); + sigmeta->extended_info[sig_idx].status_text[strlen( sig_status )] = '\0'; + } + + sigmeta->extended_info[sig_idx].fingerprint = malloc( strlen( fpr ) + 1 ); + if( sigmeta->extended_info[sig_idx].fingerprint ) { + strcpy( sigmeta->extended_info[sig_idx].fingerprint, fpr ); + sigmeta->extended_info[sig_idx].fingerprint[strlen( fpr )] = '\0'; + } + } else + break; // if allocation fails once, it isn't likely to + // succeed the next time either + fpr = gpgme_get_sig_status (ctx, ++sig_idx, &status, &created); } sigmeta->extended_info_count = sig_idx; -- 2.26.2