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ngx_http_qrcode_utils.c
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ngx_http_qrcode_utils.c
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/*===============================================================
* Copyright (C) 2013 All rights reserved.
*
* Filename：ngx_http_qrcode_utils.c
* Author ：dcshi
* Created：2013-02-02
================================================================*/
#include "ngx_http_qrcode_utils.h"
ngx_int_t
ngx_http_qrcode_set_fg_color(ngx_http_request_t *r, ngx_int_t *color, ngx_array_t *compiled_args);
ngx_int_t
ngx_http_qrcode_set_bg_color(ngx_http_request_t *r, ngx_int_t *color, ngx_array_t *compiled_args);
ngx_int_t
ngx_http_qrcode_set_level(ngx_http_request_t *r, ngx_int_t *val, ngx_array_t *compiled_args);
ngx_int_t
ngx_http_qrcode_set_hint(ngx_http_request_t *r, ngx_int_t *val, ngx_array_t *compiled_args);
ngx_int_t
ngx_http_qrcode_set_size(ngx_http_request_t *r, ngx_int_t *val, ngx_array_t *compiled_args);
ngx_int_t
ngx_http_qrcode_set_margin(ngx_http_request_t *r, ngx_int_t *val, ngx_array_t *compiled_args);
ngx_int_t
ngx_http_qrcode_set_version(ngx_http_request_t *r, ngx_int_t *val, ngx_array_t *compiled_args);
ngx_int_t
ngx_http_qrcode_set_casesensitive(ngx_http_request_t *r, ngx_int_t *val, ngx_array_t *compiled_args);
ngx_int_t
ngx_http_qrcode_set_content(ngx_http_request_t *r, ngx_str_t *val, ngx_array_t *compiled_args, ngx_int_t urlencode);
ngx_int_t
ngx_http_qrcode_eval_cmd_args(ngx_http_request_t *r,
ngx_http_qrcode_cmd_t *cmd, ngx_array_t *compiled_args);
ngx_int_t
ngx_http_qrcode_set_fg_color(ngx_http_request_t *r, ngx_int_t *color, ngx_array_t *compiled_args)
{
ngx_str_t *arg;
ngx_int_t i;
arg = compiled_args->elts;
if (arg[0].len != 6) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"fg_color format error, it should be like FF00FF. error value %V", arg);
return NGX_ERROR;
}
for (i = 0; i < 3; i++) {
*(color + i) = ngx_hextoi(arg[0].data + i*2, 2);
}
return NGX_OK;
}
ngx_int_t
ngx_http_qrcode_set_bg_color(ngx_http_request_t *r, ngx_int_t *color, ngx_array_t *compiled_args)
{
ngx_str_t *arg;
ngx_int_t i;
arg = compiled_args->elts;
if (arg[0].len != 6) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"bg_color format error, it should be like FF00FF. error value %V", arg);
return NGX_ERROR;
}
for (i = 0; i < 3; i++) {
*(color + i) = ngx_hextoi(arg[0].data + i*2, 2);
}
return NGX_OK;
}
ngx_int_t
ngx_http_qrcode_set_level(ngx_http_request_t *r, ngx_int_t *val, ngx_array_t *compiled_args)
{
ngx_str_t *arg;
ngx_int_t rc;
arg = compiled_args->elts;
rc = ngx_atoi(arg[0].data, arg[0].len);
if (rc < 0 || rc > 3) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"error level value %V, level should be 0, 1, 2 or 3.", arg);
return rc;
}
*val = rc;
return NGX_OK;
}
ngx_int_t
ngx_http_qrcode_set_hint(ngx_http_request_t *r, ngx_int_t *val, ngx_array_t *compiled_args)
{
ngx_str_t *arg;
ngx_int_t rc;
arg = compiled_args->elts;
rc = ngx_atoi(arg[0].data, arg[0].len);
if (rc == NGX_ERROR) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"error hint value %V", arg);
return rc;
}
*val = rc;
return NGX_OK;
}
ngx_int_t
ngx_http_qrcode_set_size(ngx_http_request_t *r, ngx_int_t *val, ngx_array_t *compiled_args)
{
ngx_str_t *arg;
ngx_int_t rc;
arg = compiled_args->elts;
rc = ngx_atoi(arg[0].data, arg[0].len);
if (rc == NGX_ERROR) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"error size value %V", arg);
return rc;
}
*val = rc;
return NGX_OK;
}
ngx_int_t
ngx_http_qrcode_set_margin(ngx_http_request_t *r, ngx_int_t *val, ngx_array_t *compiled_args)
{
ngx_str_t *arg;
ngx_int_t rc;
arg = compiled_args->elts;
rc = ngx_atoi(arg[0].data, arg[0].len);
if (rc == NGX_ERROR) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"error margin value %V.", arg);
return rc;
}
*val = rc;
return NGX_OK;
}
ngx_int_t
ngx_http_qrcode_set_version(ngx_http_request_t *r, ngx_int_t *val, ngx_array_t *compiled_args)
{
ngx_str_t *arg;
ngx_int_t rc;
arg = compiled_args->elts;
rc = ngx_atoi(arg[0].data, arg[0].len);
if (rc < 0 || rc > 10) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"error version value %V, it should be [0,10].", arg);
return rc;
}
*val = rc;
return NGX_OK;
}
ngx_int_t
ngx_http_qrcode_set_casesensitive(ngx_http_request_t *r, ngx_int_t *val, ngx_array_t *compiled_args)
{
ngx_str_t *arg;
ngx_int_t rc;
arg = compiled_args->elts;
rc = ngx_atoi(arg[0].data, arg[0].len);
if (rc < 0 || rc > 1) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"error casesensitive value %V, it should be 0 or 1.", arg);
return rc;
}
*val = rc;
return NGX_OK;
}
ngx_int_t
ngx_http_qrcode_set_content(ngx_http_request_t *r, ngx_str_t *val, ngx_array_t *compiled_args, ngx_int_t urlencode)
{
ngx_str_t *arg;
u_char *p;
arg = compiled_args->elts;
*val = arg[0];
if (urlencode == 1) {
p = ngx_pcalloc(r->pool, arg->len);
val->data = p;
ngx_unescape_uri(&p, &arg->data, arg->len, 0);
val->len = p - val->data;
}
return NGX_OK;
}
ngx_int_t
ngx_http_qrcode_eval_cmd_args(ngx_http_request_t *r,
ngx_http_qrcode_cmd_t *cmd, ngx_array_t *compiled_args)
{
ngx_http_qrcode_arg_template_t *value;
ngx_str_t *arg;
ngx_uint_t i;
value = cmd->args->elts;
for (i = 0; i < cmd->args->nelts; i++)
{
arg = ngx_array_push(compiled_args);
if (arg == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (value[i].lengths == NULL) { /* does not contain vars */
*arg = value[i].raw_value;
}
else {
if (ngx_http_script_run(r, arg, value[i].lengths->elts,
0, value[i].values->elts) == NULL) {
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
}
}
return NGX_OK;
}
ngx_int_t
ngx_http_qrcode_compile_args(ngx_http_request_t *r, ngx_http_qrcode_loc_conf_t *qlcf)
{
ngx_array_t *cmds;
ngx_http_qrcode_cmd_t *cmd;
ngx_array_t *compiled_args;
ngx_int_t rc;
ngx_uint_t i;
compiled_args = NULL;
rc = NGX_OK;
cmds = qlcf->cmds;
if (cmds == NULL)
return NGX_DECLINED;
cmd = cmds->elts;
for (i = 0; i < cmds->nelts; i++)
{
if (cmd[i].args)
{
compiled_args = ngx_array_create(r->pool,
cmd[i].args->nelts, sizeof(ngx_str_t));
if (compiled_args == NULL)
return NGX_HTTP_INTERNAL_SERVER_ERROR;
rc = ngx_http_qrcode_eval_cmd_args(r, &cmd[i], compiled_args);
if (rc != NGX_OK) {
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"Failed to evaluate arguments for the directive.");
return rc;
}
}
/* switch cmd*/
switch (cmd[i].cfg_code)
{
case qrcode_cfg_fg_color:
rc = ngx_http_qrcode_set_fg_color(r, qlcf->fg_color, compiled_args);
break;
case qrcode_cfg_bg_color:
rc = ngx_http_qrcode_set_bg_color(r, qlcf->bg_color, compiled_args);
break;
case qrcode_cfg_level:
rc = ngx_http_qrcode_set_level(r, &qlcf->level, compiled_args);
break;
case qrcode_cfg_hint:
rc = ngx_http_qrcode_set_hint(r, &qlcf->hint, compiled_args);
break;
case qrcode_cfg_size:
rc = ngx_http_qrcode_set_size(r, &qlcf->size, compiled_args);
break;
case qrcode_cfg_margin:
rc = ngx_http_qrcode_set_margin(r, &qlcf->margin, compiled_args);
break;
case qrcode_cfg_version:
rc = ngx_http_qrcode_set_version(r, &qlcf->version, compiled_args);
break;
case qrcode_cfg_txt:
rc = ngx_http_qrcode_set_content(r, &qlcf->txt, compiled_args, 0);
break;
case qrcode_cfg_urlencode_txt:
rc = ngx_http_qrcode_set_content(r, &qlcf->txt, compiled_args, 1);
break;
case qrcode_cfg_casesensitive:
rc = ngx_http_qrcode_set_casesensitive(r, &qlcf->casesensitive, compiled_args);
break;
default:
ngx_log_error(NGX_LOG_ERR, r->connection->log, 0,
"Unknown cfg_code: %d", cmd[i].cfg_code);
return NGX_HTTP_INTERNAL_SERVER_ERROR;
}
if (rc != NGX_OK)
return rc;
}
ngx_log_error(NGX_LOG_DEBUG, r->connection->log, 0,
"fg_color %xd%xd%xd%xd, "
"bg_color %xd%xd%xd%xd, "
"level %d, "
"hint %d, "
"size %d, "
"margin %d, "
"version %d, "
"casesensitive %d, "
"txt %V",
qlcf->fg_color[0], qlcf->fg_color[1], qlcf->fg_color[2], qlcf->fg_color[3],
qlcf->bg_color[0], qlcf->bg_color[1], qlcf->bg_color[2], qlcf->bg_color[3],
qlcf->level, qlcf->hint, qlcf->size, qlcf->margin, qlcf->version,
qlcf->casesensitive,
&qlcf->txt);
return NGX_OK;
}