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Added "set var value" command line option.

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This commit is contained in:
gardners 2012-03-19 14:26:14 +10:30
parent f43143bd0f
commit 302c9e70fb
1 changed files with 59 additions and 0 deletions
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59
commandline.c
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@ -212,6 +212,15 @@ int app_server_start(int argc,char **argv,struct command_line_option *o)
/* Record instance path for easy access by whole process */
thisinstancepath=strdup(instancepath);
/* Now that we know our instance path, we can ask for the default set of
network interfaces that we will take interest in. */
overlay_interface_args(confValueGet("interfaces",""));
if (strlen(confValueGet("interfaces",""))<1) {
fprintf(stderr,
"WARNING: Noone has told me which network interfaces to listen on.\n"
" You should probably put something in the interfaces setting.\n");
}
int pid=-1;
int running = servalNodeRunning(&pid,instancepath);
if (running<0) return -1;
@ -374,6 +383,54 @@ int app_mdp_ping(int argc,char **argv,struct command_line_option *o)
return WHY("Not implmented");
}
int app_server_set(int argc,char **argv,struct command_line_option *o)
{
char *var=cli_arg(argc,argv,o,"variable","");
char *val=cli_arg(argc,argv,o,"value","");
char conffile[1024];
char tempfile[1024];
snprintf(conffile,1024,"%s/serval.conf",serval_instancepath());
snprintf(tempfile,1024,"%s/serval.conf.temp",serval_instancepath());
FILE *in=fopen(conffile,"r");
if (!in) in=fopen(conffile,"w");
if (!in)
return WHY("could not read configuration file.");
FILE *out=fopen(tempfile,"w");
if (!out) {
fclose(in);
return WHY("could not write temporary file.");
}
char line[1024];
/* Read and write lines of config file, replacing the variable in question
if required. If the variable didn't already exist, then write it out at
the end. */
int found=0;
int varlen=strlen(var);
line[0]=0; fgets(line,1024,in);
while(line[0]) {
if ((!strncasecmp(var,line,varlen))&&(line[varlen]=='='))
{
fprintf(out,"%s=%s\n",var,val);
found=1;
}
else
fprintf(out,"%s",line);
line[0]=0; fgets(line,1024,in);
}
if (!found) fprintf(out,"%s=%s\n",var,val);
fclose(in); fclose(out);
if (rename(tempfile,conffile)) {
return WHY("Failed to put temporary config file into place.");
}
return 0;
}
/* NULL marks ends of command structure.
"<anystring>" marks an arg that can take any value.
Only exactly matching prototypes will be used.
@ -401,5 +458,7 @@ command_line_option command_line_options[]={
"Display information about any running Serval Mesh node."},
{app_mdp_ping,{"mdp","ping","<SID|broadcast>"},CLIFLAG_STANDALONE,
"Attempts to ping specified node via Mesh Datagram Protocol (MDP)."},
{app_server_set,{"set","<variable>","<value>"},0,
"Set specified configuration variable."},
{NULL,{NULL}}
};