gnokii: API error? - api

Question

I have issues with the following code:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <gnokii.h>
#define CONFIG_FILE "config"
struct gn_statemachine *state;
void terminate(void) {
gn_lib_phone_close(state);
gn_lib_phoneprofile_free(&state);
gn_lib_library_free();
}
int main() {
gn_data data;
gn_error error;
gn_sms_folder_list folderlist;
atexit(terminate);
if((error = gn_lib_phoneprofile_load(CONFIG_FILE,&state))
!= GN_ERR_NONE)
{
fprintf(stderr,"%s\n",gn_error_print(error));
exit(1);
}
memset(&folderlist,0,sizeof(gn_sms_folder_list));
gn_data_clear(&data);
data.sms_folder_list = &folderlist;
error = gn_sm_functions(GN_OP_GetSMSFolders, &data, state);
printf("ada %d sms dun\n",folderlist.number);
return 0;
}
I'm compiling it with gcc -o main main.c -lgnokii, but when it's executed it generates errors when looking for config file:
# ./gnokiitest
No phone_config section in the config file.
Either global or given phone section cannot be found.
Segmentation fault
because I included the config file within one folder of main output:
$ cat config
[global]
connection = bluetooth
port = 24:22:AB:AB:C1:F8
model = AT
rfcomm_channel = 2
Whats wrong then?

Answer 1

For starters, the following will cause issues:
if((error = gn_lib_phoneprofile_load(CONFIG_FILE,&state))
state variable is not initialized here. That will cause random pointer being passed and most likely segfault.
Next, the first argument to gn_lib_phoneprofile_load() is not the config file name, but the phone section in the config where the connection details are provided. Given that you pass config as this parameter you'd need:
[phone_config]
connection = bluetooth
port = 24:22:AB:AB:C1:F8
model = AT
rfcomm_channel = 2
but placed in the standard gnokii config file location. To use different location use:
gn_lib_phoneprofile_load_from_file(CONFIG_FILE, NULL, &state);
Second argument is the phone section name. If NULL, then [global] would be used.
Additionally gn_lib_phoneprofile_load() just reads the config file. You need to run gn_lib_phone_open() to initialize the connection.
Finally, there is similar code already written, no need to reinvent the wheel: http://git.savannah.gnu.org/cgit/gnokii/gnokii-extras.git/tree/snippets/sms/sms_status.c