/*
* Parse out the callback method and
* add it to the req struct.
*/
int parseCallback(struct extRequest *req) {
int return_status = 0;
int callbackLength = 0;
if(cgiFormStringSpaceNeeded(CALLBACK_PARAM_NAME, &callbackLength) == cgiFormSuccess) {
if(callbackLength > 0) {
req->callback = (char*)malloc(sizeof(char)*callbackLength);
if(cgiFormString(CALLBACK_PARAM_NAME, req->callback, callbackLength) == cgiFormSuccess) {
return_status = 1;
} else {
free(req->callback);
}
}
}
/*
* Set req->callback to NULL
* so that it's not printed
* in curl.c
*/
if(!return_status) {
req->callback = NULL;
}
return return_status;
}
/*
* Function: processAddForm
* Parameters: (void)
* Returns: int
*
* This function is used to process the data that was entered in the adding
* form. The function allocates memory and if it fails memory allocation
* error will be printed to the user. It also checks there were no errors
* in new artists id and if there are errors the appropriate message will
* be shown to the user
*/
static Boolean processAddForm(int *errors, artistNode_t * formdata)
{
int result = 0;
int size = -1;
/* Check arguments */
if (errors == NULL || formdata == NULL) {
return FALSE;
}
/* Get artist name */
result = cgiFormStringSpaceNeeded("artname", &size);
if (result != cgiFormSuccess) {
errors[0] = E_FORM;
}
else if (size > MAXLEN_ARTISTNAME + 1) {
errors[0] = E_TOOBIG;
}
else {
formdata->name = malloc(sizeof(char) * size);
if (formdata->name == NULL) {
errors[0] = E_MALLOC_FAILED;
}
else {
result = cgiFormStringNoNewlines("artname", formdata->name, size);
if (result != cgiFormSuccess) {
errors[0] = E_FORM;
}
else if (checkString2(formdata->name) == FALSE) {
errors[0] = E_INVALID_PARAM;
}
else {
/* check whether artist already exists */
{
/*pointer to list of artists */
int *allArtists = getArtists();
int i; /*counter */
for (i = 0; allArtists[i] != LAST_ID_IN_ARRAY; i++) {
char *artistName = getArtistName(allArtists[i]);
if (strcmp(artistName, formdata->name) == 0) {
/*artist added is 'the same' as another in database */
errors[0] = ALREADY_ADDED;
}
free(artistName);
}
free(allArtists);
}
}
}
}
if (errors[0] != E_NOERROR) {
return FALSE;
}
return TRUE;
}
/*
* Determine the URL to send data to.
*/
int parseURL(struct extRequest *req) {
int return_status = 0;
int urlLength = 0;
if(cgiFormStringSpaceNeeded(URL_PARAM_NAME, &urlLength) == cgiFormSuccess) {
if(urlLength > 0) {
req->url = (char*)malloc(sizeof(char)*urlLength);
if(cgiFormString(URL_PARAM_NAME, req->url, urlLength) == cgiFormSuccess) {
/* Success */
return_status = 1;
} else {
free(req->url);
}
}
}
return return_status;
}
void setFieldValue(base *self, char *field_name, int not_form, void *value,
field_type type, field_mark mark) {
int length = 0;
int name_length = strlen(field_name);
if (not_form) {
length = strlen(value);
} else {
cgiFormStringSpaceNeeded(field_name, &length);
}
self->form_datas[self->current] = (form_data*) malloc(sizeof(form_data));
self->form_datas[self->current]->field_type = type;
self->form_datas[self->current]->field_mark = mark;
self->form_datas[self->current]->field_value = (char *) malloc(
sizeof(char) * (length + 1));
self->form_datas[self->current]->field_value_length = length;
//fprintf(cgiOut, "%s length %ld", field_name, strlen(field_name));
self->form_datas[self->current]->field_name = (char *) malloc(
sizeof(char) * (name_length + 1));
strncpy(self->form_datas[self->current]->field_name, field_name,
name_length + 1);
self->form_datas[self->current]->field_name_length = name_length;
if (not_form) {
strcpy(self->form_datas[self->current]->field_value, value);
} else {
cgiFormString(field_name, self->form_datas[self->current]->field_value,
length);
}
self->field_tables[self->current] = (char *) malloc(
sizeof(char) * (strlen(field_name) + 10));
strncpy(self->field_tables[self->current], field_name,
strlen(field_name) + 1);
#ifdef DEBUG
fprintf(cgiOut, " <h1>file = %s , %s = %s , origin = %s</h1>",
__FILE__,
self->field_tables[self->current],
self->form_datas[self->current]->field_name,
field_name
);
#endif
self->current++;
}
/*
* Iterate through the passed name=value pairs
* and construct extArg structs for each of them.
*
* Add them to the array of extArg structs inside
* the req struct
*/
int parseArguments(struct extRequest *req) {
char **array, **arrayStep;
if (cgiFormEntries(&array) != cgiFormSuccess) {
return 0;
}
int num_args = countArguments();
int arg_num = 0;
req->numargs = num_args;
/* make req->args big enough to hold all the extArg structs */
req->args = (struct extArg **)malloc(sizeof(struct extArg)*num_args);
arrayStep = array;
int val_size = 0;
char *val;
while (*arrayStep) {
/* If the name is not a URL, method, or callback, we need to add it */
if(strcmp(*arrayStep, URL_PARAM_NAME) != 0 &&
strcmp(*arrayStep, CALLBACK_PARAM_NAME) != 0) {
/* Get the length of the passed string so our buffer is big enough. */
cgiFormStringSpaceNeeded(*arrayStep, &val_size);
val = (char*)malloc(sizeof(char)*val_size);
cgiFormString(*arrayStep, val, val_size);
req->args[arg_num++] = makeArg(*arrayStep, val);
/* The val has been passed to makeArg, so free it */
free(val);
}
arrayStep++;
}
cgiStringArrayFree(array);
return 1;
}
/**
* 显示登录页面以及处理用户登录
*/
int login_process() {
char* username = NULL;
char* password = NULL;
char* buffer = NULL;
int field_buffer_size = 0;
REPLACEABLE_TAG_LIST tag_list = (REPLACEABLE_TAG_LIST) malloc(
sizeof(REPLACEABLE_TAG) * 2);
// 获取用户提交的用户名和密码，如果没有提交数据，则 username 和 password 为空字符串
cgiFormStringSpaceNeeded("username", &field_buffer_size);
username = (char*) malloc(field_buffer_size);
memset(username, 0, field_buffer_size);
cgiFormString("username", username, field_buffer_size);
cgiFormStringSpaceNeeded("password", &field_buffer_size);
password = (char*) malloc(field_buffer_size);
cgiFormString("password", password, field_buffer_size);
if (strcmp(username, g_login_username) == 0
&& strcmp(password, g_login_password) == 0) {
// 登录验证通过，设置 session 数据后重定向浏览器
session_set("USERNAME", g_login_username);
session_write_close();
cgiHeaderLocation(cgiScriptName);
free(username);
free(password);
return 0;
}
// 输出 ContentType header
// 作为 CGI 程序必须输出这个 header，否则会导致 500 错误
fprintf(cgiOut, "Pragma: no-cache\n");
cgiHeaderContentType("text/html");
// 显示登录页面
tag_list[0].tag = "{%ERROR_MESSAGE%}";
if (strlen(username) != 0 || strlen(password) != 0) {
tag_list[0].value = "您输入的用户名或者密码错误。";
} else {
tag_list[0].value = "";
}
tag_list[1].tag = "{%USERNAME%}";
tag_list[1].value = username;
buffer = read_template(g_login_template);
if (buffer == NULL) {
fprintf(cgiOut, "Warning: Can't read template file: %s.<br />\n",
g_login_template);
free(username);
free(password);
return -1;
}
parse_template(&buffer, tag_list, 2);
fprintf(cgiOut, "%s", buffer);
free(buffer);
free(username);
free(password);
// session_destroy();
return 0;
}
