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Re: Questions regarding ssl_parse_uat() in packet-ssl.c file
From: Evan Huus <eapache () gmail com>
Date: Tue, 4 Nov 2014 16:00:54 -0500
On Tue, Nov 4, 2014 at 3:52 PM, Sara fahman <fflloorraa9 () gmail com> wrote:
I'm trying to learn how this function works and I have some questions (I placed them below its following definition). static void ssl_parse_uat(void) { wmem_stack_t *tmp_stack; guint i; ssl_set_debug(ssl_debug_file_name); if (ssl_key_hash) { g_hash_table_foreach(ssl_key_hash, ssl_private_key_free, NULL); g_hash_table_destroy(ssl_key_hash); } /* remove only associations created from key list */ tmp_stack = wmem_stack_new(NULL); g_tree_foreach(ssl_associations, ssl_assoc_from_key_list, tmp_stack); while (wmem_stack_count(tmp_stack) > 0) { ssl_association_remove(ssl_associations, (SslAssociation *)wmem_stack_pop(tmp_stack)); } wmem_destroy_stack(tmp_stack); /* parse private keys string, load available keys and put them in key hash*/ ssl_key_hash = g_hash_table_new(ssl_private_key_hash,ssl_private_key_equal); if (nssldecrypt > 0) { for (i = 0; i < nssldecrypt; i++) { ssldecrypt_assoc_t *ssl_uat = &(sslkeylist_uats[i]); ssl_parse_key_list(ssl_uat, ssl_key_hash, ssl_associations, ssl_handle, TRUE); } } ssl_debug_flush(); } My Questions: What does removing the association created from key list mean?
The associations in the set can come from several locations (the key list is one of these) - in this case we only want to remove the associations that come from the key list and leave the other ones alone.
Where do the variable nssldecrypt get updated? i.e : it is default value is zero when it changes? What does it represent? the same question for sslkeylist_uats? Does it represent the whole file that entered by the user or just an entry of the file?
These values are set by the UAT library (see how they are passed by reference to uat_new on line 4074). sslkeylist_uats represents an array of records, one record for each entered by the user. nssldecrypt is the number of elements in the array. Hope this helps! Evan
Sorry if the answers for these questions are obvious but I'm still a beginner programmer in the learning phase. Thanks. Flora ___________________________________________________________________________ Sent via: Wireshark-dev mailing list <wireshark-dev () wireshark org> Archives: http://www.wireshark.org/lists/wireshark-dev Unsubscribe: https://wireshark.org/mailman/options/wireshark-dev mailto:wireshark-dev-request () wireshark org?subject=unsubscribe
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Current thread:
- Questions regarding ssl_parse_uat() in packet-ssl.c file Sara fahman (Nov 04)
- Re: Questions regarding ssl_parse_uat() in packet-ssl.c file Evan Huus (Nov 04)