设置配置了，缩略图功能可以，水印没有效果

在make_thumb函数中，562行。
需要在562行之前，添加一个语句"gdImageDestroy(info->dst_im);"，用来释放make_thumb函数开始的地方分配的内存。

2014/02/28 04:04:45 [error] 23284#0: *1 open() "/data0/knose/ppwork/uploads/1_45_65.jpg!c300x200.jpg" failed (2: No such file or directory), client: 192.168.0.117, server: localhost, request: "GET /ppwork/uploads/1_45_65.jpg!c300x200.jpg HTTP/1.1", host: "192.168.0.5:6001"

配置文件
location /uploads {
root /data0/knose;
image on;
image_output on;
}

等比例缩放 t300x300 这种模式, 会从宽和高两个方向去限制, 可否指限制宽?

你好，请问如何使用ngx_image_thumb把生成的缩略图保存起来，不用每次都生成，导致CPU占用很大

使用image_output off; 直接报404的错误
使用image_output on; 是可以生成缩略图的，但是没有保存起来

这个有利于对cdn判断源站图片是否有修改！

ex: http://oopul.vicp.net/12.c300x300.jpg

同时到目前为止依然没有成功配置水印，这个模块挺好的，还是希望作者跟进一下

1：能够设置图片压缩大小格式，例如：20x20,100x100，防止随意生成不同格式图片。
2：图片可能存储fastdfs中，nginx通过http请求下载图片到本地，在压缩，添加水印。
3：可以缓存压缩图片，如果已经压缩过，还重复压缩吗？
我以前通过nginx+lua方式做过：http://www.iteye.com/topic/1125126

when I make ,it report this errors
/Users/renshangui/.nginx/ngx_image_thumb/ngx_http_image_module.c:767:30: error:
array index 6 is past the end of the array (which contains 6 elements)
[-Werror,-Warray-bounds]
strcat(info->source_file,buffer[6]);
^ ~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/secure/_string.h:125:33: note:
expanded from macro 'strcat'
__builtin___strcat_chk (dest, src, __darwin_obsz (dest))
^
/Users/renshangui/.nginx/ngx_image_thumb/ngx_http_image_module.c:722:5: note:
array 'buffer' declared here
char buffer[6][255];
^
/Users/renshangui/.nginx/ngx_image_thumb/ngx_http_image_module.c:771:35: error:
array index 6 is past the end of the array (which contains 6 elements)
[-Werror,-Warray-bounds]
strcat(info->request_filename,buffer[6]);
^ ~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/secure/_string.h:125:33: note:
expanded from macro 'strcat'
__builtin___strcat_chk (dest, src, __darwin_obsz (dest))
^
/Users/renshangui/.nginx/ngx_image_thumb/ngx_http_image_module.c:722:5: note:
array 'buffer' declared here
char buffer[6][255];
^
2 errors generated.
make[1]: *** [objs/addon/ngx_image_thumb/ngx_http_image_module.o] Error 1
make: *** [build] Error 2

会吃光内存导致系统挂掉

GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-94.el7
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
http://www.gnu.org/software/gdb/bugs/...
Reading symbols from /opt/local/nginx/sbin/nginx...done.
[New LWP 168]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `nginx: worker process '.
Program terminated with signal 11, Segmentation fault.
#0 0x00007ff2a862a167 in gdImageDestroy () from /lib64/libgd.so.2
Missing separate debuginfos, use: debuginfo-install cyrus-sasl-lib-2.1.26-20.el7_2.x86_64 expat-2.1.0-10.el7_3.x86_64 fontconfig-2.10.95-10.el7.x86_64 freetype-2.4.11-12.el7.x86_64 gd-2.0.35-26.el7.x86_64 glibc-2.17-157.el7_3.1.x86_64 keyutils-libs-1.5.8-3.el7.x86_64 krb5-libs-1.14.1-27.el7_3.x86_64 libX11-1.6.3-3.el7.x86_64 libXau-1.0.8-2.1.el7.x86_64 libXpm-3.5.11-3.el7.x86_64 libcom_err-1.42.9-9.el7.x86_64 libcurl-7.29.0-35.el7.centos.x86_64 libidn-1.28-4.el7.x86_64 libjpeg-turbo-1.2.90-5.el7.x86_64 libpng-1.5.13-7.el7_2.x86_64 libselinux-2.5-6.el7.x86_64 libssh2-1.4.3-10.el7_2.1.x86_64 libxcb-1.11-4.el7.x86_64 nspr-4.11.0-1.el7_2.x86_64 nss-3.21.0-9.el7_2.x86_64 nss-softokn-freebl-3.16.2.3-14.2.el7_2.x86_64 nss-util-3.21.0-2.2.el7_2.x86_64 openldap-2.4.40-9.el7_2.x86_64 openssl-libs-1.0.1e-60.el7_3.1.x86_64 pcre-8.32-15.el7_2.1.x86_64 zlib-1.2.7-17.el7.x86_64
(gdb) bt
#0 0x00007ff2a862a167 in gdImageDestroy () from /lib64/libgd.so.2
#1 0x00000000004a685a in calc_image_info (conf=0x1cb6428) at ngx_image_thumb-master/ngx_http_image_module.c:1057
#2 parse_image_info (conf=0x1cb6428) at ngx_image_thumb-master/ngx_http_image_module.c:934
#3 ngx_http_image_handler (r=0x1cc65d0) at ngx_image_thumb-master/ngx_http_image_module.c:442
#4 0x0000000000448592 in ngx_http_core_content_phase (r=0x1cc65d0, ph=) at src/http/ngx_http_core_module.c:1515
#5 0x00000000004429d3 in ngx_http_core_run_phases (r=r@entry=0x1cc65d0) at src/http/ngx_http_core_module.c:934
#6 0x0000000000442aed in ngx_http_handler (r=r@entry=0x1cc65d0) at src/http/ngx_http_core_module.c:917
#7 0x000000000044f09f in ngx_http_process_request (r=r@entry=0x1cc65d0) at src/http/ngx_http_request.c:1930
#8 0x000000000044f493 in ngx_http_process_request_headers (rev=rev@entry=0x7ff2a231f0e0) at src/http/ngx_http_request.c:1360
#9 0x000000000044f7bc in ngx_http_process_request_line (rev=rev@entry=0x7ff2a231f0e0) at src/http/ngx_http_request.c:1031
#10 0x000000000044fbe9 in ngx_http_wait_request_handler (rev=0x7ff2a231f0e0) at src/http/ngx_http_request.c:500
#11 0x000000000042bee1 in ngx_event_process_posted (cycle=cycle@entry=0x1ca2b70, posted=0x704c10 <ngx_posted_events>) at src/event/ngx_event_posted.c:33
#12 0x000000000042b9cb in ngx_process_events_and_timers (cycle=cycle@entry=0x1ca2b70) at src/event/ngx_event.c:278
#13 0x0000000000433c17 in ngx_worker_process_cycle (cycle=0x1ca2b70, data=) at src/os/unix/ngx_process_cycle.c:862
#14 0x000000000043104c in ngx_spawn_process (cycle=cycle@entry=0x1ca2b70, proc=proc@entry=0x433b1c <ngx_worker_process_cycle>, data=data@entry=0x0,
name=name@entry=0x4ac44e "worker process", respawn=respawn@entry=-4) at src/os/unix/ngx_process.c:198
#15 0x0000000000432d3e in ngx_start_worker_processes (cycle=cycle@entry=0x1ca2b70, n=4, type=type@entry=-4) at src/os/unix/ngx_process_cycle.c:385
#16 0x0000000000434cfe in ngx_master_process_cycle (cycle=cycle@entry=0x1ca2b70) at src/os/unix/ngx_process_cycle.c:260
#17 0x000000000041284e in main (argc=, argv=) at src/core/nginx.c:437
(gdb)

when i make nginx with --add-module=/tmp/ngx_image_thumb-master,follow this error: "ngx_http_image_module.c:980:8: error: ignoring return value of 'fread', declared with attribute warn_unused_result [-Werror=unused-result]"

Tengine 2.1.2

./configure --add-module=./nginx-image-master

编译报错

[root@test1 tengine-2.1.2]# ll ./ngx_image_thumb-master/
total 64
-rw-r--r-- 1 root root 704 Aug 17 12:07 config
-rw-r--r-- 1 root root 41871 Aug 17 12:07 ngx_http_image_module.c
-rw-r--r-- 1 root root 4795 Aug 17 12:07 README_EN.md
-rw-r--r-- 1 root root 5013 Aug 17 12:07 README.md

static int get_ext_header(char *filename)
{
FILE *handle;
handle = fopen(filename, "rb");
int ret = NGX_IMAGE_NONE; //添加处理，访问格式不存在时关闭打开的文件

if(!handle) {
    return NGX_IMAGE_NONE;
} else {
    unsigned short filetype;//bmp 0x4D42
    if(fread(&filetype, sizeof(unsigned short), 1, handle)) {
        if( filetype == 0xD8FF) {
            ret = NGX_IMAGE_JPEG;
        } else if( filetype == 0x4947) {
            ret = NGX_IMAGE_GIF;
        } else if( filetype == 0x5089) {
            ret = NGX_IMAGE_PNG;
        } else if ( filetype == 0x4d42) {
            ret = NGX_IMAGE_BMP; //添加处理bmp格式
        }

#if 0
else {
ret = NGX_IMAGE_NONE;
}
#endif
}
}
fclose(handle);
return ret;
}

站点proxy_pass http://abc.com/1.png 会被302 到 http://123.com/1.png?side=1111&sig=11111
导致提示图片非法。不晓得有没有大佬解决过

image on;
image_output off;
这样不行，非要把image_output on; 才行。