/**
* \brief Function to send an email to a user
* \param user the user to whom send the email
* \param content the body of the email
* \param subject the subject of the email
* \param sendmailScriptPath The path to the script for sending emails
*/
int
UserServer::sendMailToUser(const UMS_Data::User& user,
std::string content,
std::string subject,
std::string sendmailScriptPath) {
std::vector<std::string> tokens;
std::ostringstream command;
pid_t pid;
std::string address = user.getEmail();
//If the address is empty
if (address.empty()) {
throw UserException(ERRCODE_INVALID_MAIL_ADRESS, "Empty email address");
}
//If the script is empty
if (sendmailScriptPath.empty()) {
throw SystemException(ERRCODE_SYSTEM, "Invalid server configuration");
}
// To build the script command
command << sendmailScriptPath << " --to " << address << " -s ";
std::istringstream is(command.str());
std::copy(std::istream_iterator<std::string>(is),
std::istream_iterator<std::string>(),
std::back_inserter<std::vector<std::string> >(tokens));
char* argv[tokens.size()+6];
argv[tokens.size()+5]=NULL;
//Use of tokens
for (unsigned int i = 0; i < tokens.size(); ++i) {
argv[i]=strdup(tokens[i].c_str());
}
//To avoid mutiple values by using tokens because of spaces
argv[tokens.size()]=strdup(subject.c_str());
argv[tokens.size()+1]=strdup(content.c_str());
//To execute the script on background
argv[tokens.size()+2]=strdup(" 1>/dev/null ");
argv[tokens.size()+3]=strdup(" 2>/dev/null ");
argv[tokens.size()+4]=strdup(" & ");
pid = fork();
if (pid == -1) {//if an error occurs during fork
for (unsigned int i=0; i<tokens.size()+5; ++i) {
free(argv[i]);
}
throw SystemException(ERRCODE_SYSTEM, "Error during the creation of the process for sending mail to "
+user.getFirstname()+ " with userId:" +user.getUserId());
}
if (pid == 0) {//if the child process
freopen("dev/null", "r", stdin);
freopen("dev/null", "w", stdout);
freopen("dev/null", "w", stderr);
if (execv(argv[0], argv) == -1) {
for (unsigned int i=0; i<tokens.size()+5; ++i) {
free(argv[i]);
}
exit(1);
}
}
for (unsigned int i=0; i<tokens.size()+5; ++i) {
free(argv[i]);
}
return 0;
}
