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content-delegate.m
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content-delegate.m
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// content-delegate.m
// content-delegate
//
// Created by Dr. Rolf Jansen on 2018-05-08.
// Copyright © 2018-2019 Dr. Rolf Jansen. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
// IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
// OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
// OF THE POSSIBILITY OF SUCH DAMAGE.
#import <magick/api.h>
#import "CyObject.h"
#import "delegate-utils.h"
#import "exports.h"
#import "content-design.h"
static pthread_mutex_t EDIT_mutex = PTHREAD_MUTEX_INITIALIZER;
#pragma mark •••• Responder Delegate Class ••••
@interface Content : CyObject
{
Sources *cache;
Response htmodel;
}
- (id)initWithSources:(Sources *)sources;
- (long)content:(char *)extension :(char *)method :(Request *)request :(Response *)response;
- (long)models:(char *)name :(char *)method :(Request *)request :(Response *)response;
- (long)images:(char *)name :(char *)method :(Request *)request :(Response *)response;
- (long)upload:(char *)name :(char *)method :(Request *)request :(Response *)response;
- (long)insert:(char *)name :(char *)method :(Request *)request :(Response *)response;
- (long)rotate:(char *)name :(char *)method :(Request *)request :(Response *)response;
- (long)create:(char *)basepath :(char *)method :(Request *)request :(Response *)response;
- (long)delete:(char *)basepath :(char *)method :(Request *)request :(Response *)response;
- (long)revive:(char *)basepath :(char *)method :(Request *)request :(Response *)response;
@end
@implementation Content
- (id)initWithSources:(Sources *)sources
{
if (self = [super init])
{
cache = sources;
}
return self;
}
- (void)dealloc
{
deallocate(VPR(htmodel.content), false);
[super dealloc];
}
- (long)content:(char *)extension :(char *)method :(Request *)request :(Response *)response
{
Node *node = findName(request->serverTable, "HTTP_IF_NONE_MATCH", 18);
char *etag = (node) ? node->value.s : NULL;
if (extension)
if (cmp5(extension, "html"))
if (!etag || !*etag || strstr(etag, cache->html.conttag) != etag+1)
*response = cache->html;
else
{
strmlcpy(response->conttag, cache->html.conttag, etagLen, NULL);
return 304;
}
else if (cmp4(extension, "css"))
if (!etag || strstr(etag, cache->css.conttag) != etag+1)
*response = cache->css;
else
{
strmlcpy(response->conttag, cache->css.conttag, etagLen, NULL);
return 304;
}
else if (cmp3(extension, "js"))
if (!etag || strstr(etag, cache->js.conttag) != etag+1)
*response = cache->js;
else
{
strmlcpy(response->conttag, cache->js.conttag, etagLen, NULL);
return 304;
}
else if (cmp4(extension, "png"))
if (!etag || strstr(etag, cache->png.conttag) != etag+1)
*response = cache->png;
else
{
strmlcpy(response->conttag, cache->png.conttag, etagLen, NULL);
return 304;
}
else if (cmp4(extension, "ico"))
if (!etag || strstr(etag, cache->ico.conttag) != etag+1)
*response = cache->ico;
else
{
strmlcpy(response->conttag, cache->ico.conttag, etagLen, NULL);
return 304;
}
if (!response->content)
{
response->contdyn = true;
response->contlen = 42;
response->conttyp = "text/plain";
response->content = strcpy(allocate((long)response->contlen+1, default_align, false), "The Content Responder Delegate does work.\n");
}
return (response->contlen) ? 200 : 0;
}
- (long)models:(char *)name :(char *)method :(Request *)request :(Response *)response
{
Node *node = findName(request->serverTable, "HTTP_IF_NONE_MATCH", 18);
char *etag = (node) ? node->value.s : NULL;
if (node = findName(cache->models, name, strvlen(name)))
if (!etag || strstr(etag, ((Response *)node->value.p)->conttag) != etag+1)
*response = *(Response *)node->value.p;
else
{
strmlcpy(response->conttag, ((Response *)node->value.p)->conttag, etagLen, NULL);
return 304;
}
if (response->contlen)
return 200;
else
{
response->contlen = 10;
response->conttyp = "text/plain";
response->content = "Not found.";
return 404;
}
}
- (long)images:(char *)name :(char *)method :(Request *)request :(Response *)response
{
Node *node = findName(request->serverTable, "HTTP_IF_NONE_MATCH", 18);
char *etag = (node) ? node->value.s : NULL;
if (node = findName(cache->images, name, strvlen(name)))
if (!etag || strstr(etag, ((Response *)node->value.p)->conttag) != etag+1)
*response = *(Response *)node->value.p;
else
{
strmlcpy(response->conttag, ((Response *)node->value.p)->conttag, etagLen, NULL);
return 304;
}
if (response->contlen)
return 200;
else
{
response->contlen = 10;
response->conttyp = "text/plain";
response->content = "Not found.";
return 404;
}
}
- (long)upload:(char *)name :(char *)method :(Request *)request :(Response *)response
{
long rc = 500;
char *conttyp, *content, *droot;
llong contlen;
Node *node;
if ((node = findName(request->serverTable, "DOCUMENT_ROOT", 13)) && (droot = node->value.s) && *droot
&& (node = findName(request->serverTable, "CONTENT_TYPE", 12)) && (conttyp = strstr(node->value.s, "multipart/form-data"))
&& (node = findName(request->serverTable, "CONTENT_DATA", 12)) && (contlen = node->value.size) && (content = node->value.s))
{
rc = 400;
char *boundary = conttyp+vnamlen(conttyp)-1; cpy2(boundary, "--");
int boundlen = strvlen(boundary);
char *r, *s, *t;
for (s = strstr(content, boundary) + boundlen, t = content+contlen-1; t > s
&& !(cmp2(t, "--")
&& strstr(t-boundlen, boundary) == t-boundlen); t--);
if (t > s)
{
t -= boundlen;
if (cmp2(t-2, "\r\n"))
t -= 2;
else if (*(t-1) == '\n' || *(t-1) == '\r')
t--;
*t = '\0';
char *filename, *imagtype;
for (r = s; r < t && !cmp4(r, "\r\n\r\n"); r++); *r = '\0'; r += 4;
if (r >= t)
return rc;
if (strstr(s, "name=\"image\"")
&& (filename = strstr(s, "filename=\"")))
{
imagtype = strstr(s, "Content-Type: ");
char *p;
for (p = filename += 10; *p && *p != '"'; p++); *p = 0;
int fl = (int)(p-filename);
if (imagtype)
{
imagtype += 14;
imagtype[wordlen(imagtype)] = '\0';
}
else
imagtype = (char *)extensionToType(filename, fl);
if (cmp6(imagtype, "image/"))
{
int cl,
rl = strvlen(droot),
nl = strvlen(name),
imgpl = rl + 1 + nl + 1 + fl; // for example $DOCUMENT_ROOT/articles/media/1527627185/image_to_be_uploaded.jpg
char imgp[OSP(imgpl+1)];
cl = strmlcat(imgp, imgpl+1, NULL, droot, rl, "/", 1, name, nl, NULL);
struct stat st; // check whether the target directory exist
if ((stat(imgp, &st) == no_error // in case it does not
|| (mkdir(imgp, 0775) == no_error // then try to create it
&& stat(imgp, &st) == no_error)) // by purpose we won't resolve inssues with intermediate path components
&& S_ISDIR(st.st_mode)) // final check, and let's go
{
FILE *file;
cl += strmlcat(imgp+cl, imgpl-cl+1, NULL, "/", 1, filename, fl, NULL);
if (file = fopen(imgp, "w"))
if (fwrite(r, t-r, 1, file) == 1)
{
fclose(file);
// involve GraphicsMagick
InitializeMagick(NULL);
ExceptionInfo excepInfo = {};
GetExceptionInfo(&excepInfo);
ImageInfo *imageInfo = CloneImageInfo(0);
// infer the image format conforming to the uploded file name
strmlcpy(imageInfo->filename, imgp, MaxTextExtent, &cl);
Image *image;
if ((image = PingBlob(imageInfo, r, t-r, &excepInfo)) // ping the blob first, however, some image formats can not
|| (image = BlobToImage(imageInfo, r, t-r, &excepInfo))) // be pinged from blob, so try again by reading the whole thing
{
// only the image dimensions are neded in this stage
ulong imgWidth = image->columns;
ulong imgHeight = image->rows;
DestroyImage(image);
DestroyImageInfo(imageInfo);
DestroyExceptionInfo(&excepInfo);
DestroyMagick();
char *cp = imgp+rl;
while (p = strstr(cp+1, ARTICLES_DIR))
cp = p;
cl = strvlen(cp);
// vv -- max. string size of ulong is 20 -- 18446744073709551616
response->content = allocate(cl + 1 + 20 + 1 + 20, default_align, false);
strmlcpy(response->content, cp, 0, &cl);
response->content[cl++] = '\n';
cl += int2str(response->content+cl, imgWidth, 21, 0);
response->content[cl++] = '\n';
cl += int2str(response->content+cl, imgHeight, 21, 0);
response->contlen = cl;
response->contdyn = true;
response->conttyp = "text/plain";
rc = 200;
}
}
else
fclose(file);
}
}
}
}
}
return rc;
}
- (long)insert:(char *)name :(char *)method :(Request *)request :(Response *)response
{
long rc = 500;
char *conttyp, *content, *droot;
llong contlen;
Node *node;
if ((node = findName(request->serverTable, "DOCUMENT_ROOT", 13)) && (droot = node->value.s)
&& (node = findName(request->serverTable, "CONTENT_TYPE", 12)) && (conttyp = strstr(node->value.s, "text/plain"))
&& (node = findName(request->serverTable, "CONTENT_DATA", 12)) && (contlen = node->value.size) && (content = node->value.s))
{
rc = 400;
int rl, nl, sl, al, cl;
char *size = content,
*angle = NULL,
*crop = NULL;
if ((rl = strvlen(droot))
&& (nl = strvlen(name))
&& (sl = linelen(size))
&& (al = linelen(angle = size + sl+1))
&& (cl = linelen(crop = angle + al+1)))
{
size[sl] = angle[al] = crop[cl] = '\0';
int imgpl = rl + 1 + nl + MEDIA_DIR_LEN; // for example $DOCUMENT_ROOT/articles/media/1527627185/image_to_be_inserted.jpg[.png]
char imgp[OSP(imgpl+1)];
nl = strmlcat(imgp, imgpl+1, NULL, droot, rl, "/", 1, name, nl, NULL);
struct stat st;
ulong imgWidth, imgHeight;
double top, left, bottom, right;
double alpha;
char *h;
if (stat(imgp, &st) == no_error && S_ISREG(st.st_mode)
&& (imgWidth = strtoul(size, &h, 10))
&& (imgHeight = strtoul(h+1, NULL, 10))
&& -180 <= (alpha = strtod(angle, NULL)) && alpha <= 180
&& 0 <= (top = strtod(crop, &h)) && top < 1
&& 0 <= (left = strtod(h+1, &h)) && left < 1
&& top < (bottom = strtod(h+1, &h)) && bottom <= 1
&& left < (right = strtod(h+1, &h)) && right <= 1)
{
// involve GraphicsMagick
InitializeMagick(NULL);
ExceptionInfo excepInfo = {};
GetExceptionInfo(&excepInfo);
ImageInfo *imageInfo = CloneImageInfo(0);
// infer the image format conforming to the uploaded file name
strmlcpy(imageInfo->filename, imgp, MaxTextExtent, &nl);
Image *working;
if (working = ReadImage(imageInfo, &excepInfo))
{
if (fabs(alpha) >= 0.001)
{
Image *image = RotateImage(working, alpha, &excepInfo);
DestroyImage(working);
working = image;
if (!working)
goto destroy;
}
RectangleInfo croprect = {lround((right - left)*imgWidth),
lround((bottom - top)*imgHeight),
lround(left*imgWidth),
lround(top*imgHeight)};
if (croprect.width < imgWidth || croprect.height < imgHeight)
{
Image *image = CropImage(working, &croprect, &excepInfo);
DestroyImage(working);
working = image;
if (!working)
goto destroy;
}
cpy5(working->filename+nl, ".png");
cpy4(working->magick, "PNG");
WriteImage(imageInfo, working);
imgWidth = working->columns;
imgHeight = working->rows;
DestroyImage(working);
char *p, *np = imgp+rl;
while (p = strstr(np+1, ARTICLES_DIR))
np = p;
nl = strvlen(np);
// vv -- max. string size of uint is 10 -- 4294967294
response->content = allocate(nl + 1 + 10 + 1 + 10, default_align, false);
strmlcpy(response->content, np, 0, &nl);
response->content[nl++] = '\n';
nl += int2str(response->content+nl, imgWidth, 11, 0);
response->content[nl++] = '\n';
nl += int2str(response->content+nl, imgHeight, 11, 0);
response->contlen = nl;
response->contdyn = true;
response->conttyp = "text/plain";
rc = 200;
}
destroy:
DestroyImageInfo(imageInfo);
DestroyExceptionInfo(&excepInfo);
DestroyMagick();
}
}
}
return rc;
}
- (long)rotate:(char *)name :(char *)method :(Request *)request :(Response *)response
{
long rc = 500;
char *conttyp, *content, *droot;
llong contlen;
Node *node;
if ((node = findName(request->serverTable, "DOCUMENT_ROOT", 13)) && (droot = node->value.s)
&& (node = findName(request->serverTable, "CONTENT_TYPE", 12)) && (conttyp = strstr(node->value.s, "text/plain"))
&& (node = findName(request->serverTable, "CONTENT_DATA", 12)) && (contlen = node->value.size) && (content = node->value.s))
{
rc = 400;
int rl, nl, sl, al;
char *size = content,
*angle = NULL;
if ((rl = strvlen(droot))
&& (nl = strvlen(name))
&& (sl = linelen(size))
&& (al = linelen(angle = size + sl+1)))
{
size[sl] = angle[al] = '\0';
int imgpl = rl + 1 + nl + MEDIA_DIR_LEN; // for example $DOCUMENT_ROOT/articles/media/1527627185/image_to_be_rotated.jpg[.png]
char imgp[OSP(imgpl+1)];
nl = strmlcat(imgp, imgpl+1, NULL, droot, rl, "/", 1, name, nl, NULL);
struct stat st;
ulong imgWidth, imgHeight;
double alpha;
char *h;
if (stat(imgp, &st) == no_error && S_ISREG(st.st_mode)
&& (imgWidth = strtoul(size, &h, 10))
&& (imgHeight = strtoul(h+1, NULL, 10))
&& -180 <= (alpha = strtod(angle, NULL)) && alpha <= 180)
{
// involve GraphicsMagick
InitializeMagick(NULL);
ExceptionInfo excepInfo = {};
GetExceptionInfo(&excepInfo);
ImageInfo *imageInfo = CloneImageInfo(0);
// infer the image format conforming to the uploaded file name
strmlcpy(imageInfo->filename, imgp, MaxTextExtent, &nl);
Image *original, *working;
if (original = ReadImage(imageInfo, &excepInfo))
{
working = RotateImage(original, alpha, &excepInfo);
DestroyImage(original);
if (working)
{
cpy5(working->filename+nl, ".png");
cpy4(working->magick, "PNG");
WriteImage(imageInfo, working);
imgWidth = working->columns;
imgHeight = working->rows;
DestroyImage(working);
char *p, *np = imgp+rl;
while (p = strstr(np+1, ARTICLES_DIR))
np = p;
nl = strvlen(np);
// vv -- max. string size of uint is 10 -- 4294967294
response->content = allocate(nl + 1 + 10 + 1 + 10, default_align, false);
strmlcpy(response->content, np, 0, &nl);
response->content[nl++] = '\n';
nl += int2str(response->content+nl, imgWidth, 11, 0);
response->content[nl++] = '\n';
nl += int2str(response->content+nl, imgHeight, 11, 0);
response->contlen = nl;
response->contdyn = true;
response->conttyp = "text/plain";
rc = 200;
}
}
DestroyImageInfo(imageInfo);
DestroyExceptionInfo(&excepInfo);
DestroyMagick();
}
}
}
return rc;
}
long GEThandler(char *droot, int drootl, char *entity, int el, char *spec, Request *request, Response *response, Response *cache);
long POSThandler(char *droot, int drootl, char *entity, int el, char *spec, Request *request, Response *response, Response *cache);
boolean reindex(char *droot, int drootl, char *entity, int el, char *contitle, boolean update);
- (long)create:(char *)basepath :(char *)method :(Request *)request :(Response *)response;
{
if (basepath && *basepath)
{
char *droot;
if (droot = docRoot(request->serverTable))
{
int drootl = strvlen(droot);
int bl = strvlen(basepath);
int artdl = drootl + 1 + bl; // for example $DOCUMENT_ROOT/articles
char artd[OSP(artdl+1)];
strmlcat(artd, artdl+1, NULL, droot, drootl, "/", 1, basepath, bl, NULL);
struct stat st;
if (stat(artd, &st) == no_error && S_ISDIR(st.st_mode))
{
Node *node;
if ((node = findName(cache->models, "model.html", 10)) && ((Response *)node->value.p)->contlen)
{
if (!htmodel.content)
{
// Need to replace the generic title 'CONTENT_TITLE' by the real one, which must be informed by the respective server environment variable
llong contlen = ((Response *)node->value.p)->contlen;
char *content = ((Response *)node->value.p)->content;
char *titlpos = strstr(content, "CONTENT_TITLE");
if (titlpos)
{
char *contitl = conTitle(request->serverTable);
int titllen = strvlen(contitl);
htmodel.contlen = contlen + titllen - 13;
htmodel.content = allocate(htmodel.contlen+1, default_align, false);
llong p = titlpos - content, q = contlen - p - 13;
memvcpy(htmodel.content, content, p);
p += strmlcpy(htmodel.content+p, contitl, 0, &titllen);
memvcpy(htmodel.content+p, titlpos+13, q);
htmodel.content[contlen] = '\0';
htmodel.conttyp = "text/html; charset=utf-8";
}
}
if (cmp4(method, "GET"))
{
char *plang, *qlang = (request->QueryTable && (node = findName(request->QueryTable, "lang", 4)) && node->value.s && strvlen(node->value.s) == 2)
? node->value.s : NULL;
if (qlang && (plang = strcasestr(htmodel.content, "<HTML lang=\"")))
cpy2(plang+12, qlang);
return GEThandler(droot, drootl, "model", 5, "html", request, response, &htmodel);
}
else // POST
return POSThandler(droot, drootl, basepath, strvlen(basepath), "html", request, response, &htmodel);
}
}
else
return 404;
}
return 500;
}
return 400;
}
- (long)delete:(char *)basepath :(char *)method :(Request *)request :(Response *)response;
{
pthread_mutex_lock(&EDIT_mutex);
int rc = 400;
if (basepath && *basepath && cmp4(method, "GET"))
{
char *droot;
if (droot = docRoot(request->serverTable))
{
int drootl = strvlen(droot);
Node *node;
if (((node = findName(request->QueryTable, "a", 1))
|| (node = findName(request->QueryTable, "art", 3))
|| (node = findName(request->QueryTable, "article", 7)))
&& node->value.s && *node->value.s)
{
char *article = node->value.s;
int bl = strvlen(basepath),
al = strvlen(article);
int artpl = drootl + 1 + bl + 1 + al; // for example $DOCUMENT_ROOT/articles/1527627185.html
char artp[OSP(artpl+1)];
strmlcat(artp, artpl+1, NULL, droot, drootl, "/", 1, basepath, bl, "/", 1, article, al, NULL);
int dl = domlen(article);
int medpl = drootl + 1 + bl + 1 + MEDIA_DIR_LEN + 1 + dl; // for example $DOCUMENT_ROOT/articles/media/1527627185
char medp[OSP(medpl+1)];
strmlcat(medp, medpl+1, NULL, droot, drootl, "/", 1, basepath, bl, "/"MEDIA_DIR"/", MEDIA_DIR+2, article, dl, NULL);
// 1. move the respective media directory into /tmp
struct stat st;
int tmppl = 5+al; // for example /tmp/1527627185.html
char tmpp[OSP(tmppl+1)];
strmlcat(tmpp, tmppl+1, NULL, "/tmp/", 5, article, dl, NULL);
if (stat(medp, &st) == no_error && S_ISDIR(st.st_mode))
rename(medp, tmpp);
// 2. move the article file into /tmp (actually do copy/delete, s. below)
strmlcat(tmpp, tmppl+1, NULL, "/tmp/", 5, article, al, NULL);
if (stat(artp, &st) == no_error && S_ISREG(st.st_mode)
&& fileCopy(artp, tmpp, &st) == no_error // the spider of the search-deleagte determines changes by observing the number of hard links for a given
&& unlink(artp) == no_error) // inode. For this reason we cannot simply rename the deleted file, because its nlink value wont't change.
{
reindex(droot, drootl, basepath, bl, conTitle(request->serverTable), false);
rc = 303;
int bpl;
if (bpl = strvlen(basepath))
if (response->content = allocate(bpl + 1, default_align, false))
{
response->contdyn = true;
response->contlen = strmlcpy(response->content, basepath, bpl+1, &bpl);
}
else
rc = 500;
}
else
rc = 404;
}
// rc = 400
}
else
rc = 500;
}
pthread_mutex_unlock(&EDIT_mutex);
return rc;
}
- (long)revive:(char *)basepath :(char *)method :(Request *)request :(Response *)response;
{
pthread_mutex_lock(&EDIT_mutex);
int rc = 400;
if (basepath && *basepath && cmp4(method, "GET"))
{
char *droot;
if (droot = docRoot(request->serverTable))
{
reindex(droot, strvlen(droot), basepath, strvlen(basepath), conTitle(request->serverTable), false);
rc = 303;
int bpl;
if (bpl = strvlen(basepath))
if (response->content = allocate(bpl + 1, default_align, false))
{
response->contdyn = true;
response->contlen = strmlcpy(response->content, basepath, bpl+1, &bpl);
}
else
rc = 500;
}
else
rc = 500;
}
pthread_mutex_unlock(&EDIT_mutex);
return rc;
}
@end
#pragma mark •••• Responder Delegate Plugin Entry Points ••••
Content *lResponder = nil;
EXPORT boolean initialize(Sources *sources)
{
lResponder = [[Content alloc] initWithSources:sources];
return (lResponder != nil);
}
SEL makeSelector(char *message, int ml)
{
if (!ml)
ml = strvlen(message);
char sel[OSP(ml+4+1)];
strmlcpy(sel, message, 0, &ml);
cpy5(sel+ml, "::::");
return sel_registerName(sel);
}
EXPORT long respond(char *entity, int el, Request *request, Response *response)
{
long rc = 0;
Node *node;
char *method = NULL;
if ((node = findName(request->serverTable, "REQUEST_METHOD", 14))
&& (cmp4(method = node->value.s, "GET") || cmp5(method, "POST")) // only respond to GET or POST requests
&& cmp6(entity, "/edit/") && entity[6] != '/' // only be reponsible for everything below the /edit/ path
&& entity[6] != '_') // but do not respond to other dynamic calls
{
if (*(entity += 6) != '\0')
el -= 6;
else
el = 10, entity = "index.html";
int ml = el;
char *msg = strcpy(alloca(OSP(ml+5)), entity);
char *spec = NULL;
if (cmp8(msg, "content."))
spec = msg+8, msg[ml = 7] = '\0';
else if (cmp7(msg, "models/")
|| cmp7(msg, "images/")
|| cmp7(msg, "upload/")
|| cmp7(msg, "insert/")
|| cmp7(msg, "rotate/"))
spec = msg+7, msg[ml = 6] = '\0';
else if (cmp8(msg+ml-7, "/create")
|| cmp8(msg+ml-7, "/delete")
|| cmp8(msg+ml-7, "/revive"))
spec = msg, msg += ml-6, spec[ml-7] = '\0', ml = 6;
else
{
int dl;
if ((dl = domlen(msg)) != ml)
{
msg[ml = dl] = '\0';
spec = entity+ml+1;
}
}
SEL selector = makeSelector(msg, ml);
if ([lResponder respondsToSelector:selector] // return a cached or generated resource
&& (rc = (long)objc_msgSend(lResponder, selector, (id)spec, (id)method, (id)request, (id)response)))
return rc;
else if ((node = findName(request->serverTable, "DOCUMENT_ROOT", 13)) // access a resource from DOCUMENT_RROT
&& node->value.s && (ml = strvlen(node->value.s)))
return (cmp4(method, "GET"))
? GEThandler(node->value.s, ml, entity, el, spec, request, response, NULL)
: POSThandler(node->value.s, ml, entity, el, spec, request, response, NULL);
}
return rc;
}
EXPORT void freeback(Response *response)
{
if (response->contdyn)
{
if (response->contdyn < 0)
freeDynBuffer((dynptr){response->content});
else
deallocate(VPR(response->content), false);
}
}
EXPORT void release(void)
{
[lResponder release];
lResponder = nil;
}
#pragma mark ••• Helper Functions •••
static inline int articlePathAndName(char *path, int plen, char **name)
{
int i;
for (i = plen - ARTICLES_DIR_LEN; i >= 0 && !cmp8(path+i, ARTICLES_DIR); i--);
if (i < 0)
{
*name = NULL;
return 0;
}
else
{
plen = i + ARTICLES_DIR_LEN;
path += plen;
*name = (*path == '/') ? path+1 : NULL;
return plen;
}
}
static inline llong contread(char *buf, llong size, llong count, FILE *file, Response *cache, llong *pos)
{
if (cache && pos && 0 <= *pos && *pos < cache->contlen - 1)
{
llong bytes = count*size;
if (bytes > cache->contlen - *pos)
bytes = cache->contlen - *pos;
memvcpy(buf, cache->content + *pos, bytes);
*pos += bytes;
return bytes/size;
}
else if (file)
return fread(buf, size, count, file);
else
return 0;
}
static inline llong contstat(char *filep, struct stat *st, Response *cache)
{
if (cache)
return cache->contlen;
else if (filep)
return (stat(filep, st) == no_error && S_ISREG(st->st_mode)) ? st->st_size : 0;
else
return 0;
}
long GEThandler(char *droot, int drootl, char *entity, int el, char *spec, Request *request, Response *response, Response *cache)
{
pthread_mutex_lock(&EDIT_mutex);
long rc = 0;
int filepl = 0;
char *filep = NULL;
struct stat st = {};
llong filesize;
if (!cache && droot)
{
filepl = drootl + 1 + el + 10;
filep = alloca(OSP(filepl+1));
if (entity[el-1] != '/' || spec)
strmlcat(filep, filepl+1, NULL, droot, drootl, "/", 1, entity, el, NULL);
else
{
strmlcat(filep, filepl+1, NULL, droot, drootl, "/", 1, entity, el, "index.html", 10, NULL);
spec = "html";
}
}
if (filesize = contstat(filep, &st, cache))
{
FILE *file = NULL;
char *content = NULL;
llong contlen, contpos = 0;
if ((content = allocate((contlen = filesize + 64 + 39 + STAMP_DATA_LEN + STAMP_VALUE_LEN + CLOSE_DATA_LEN + 69)+1, default_align, false))
&& (cache || (file = fopen(filep, "r"))))
{
int32_t loext = FourLoChars(spec);
if (loext == 'html' && spec[4] == '\0' || loext == 'htm\0')
{
content[contlen] = '\0';
llong i, k, l, m, n;
if ((l = n = contread(content, 1, 8, file, cache, &contpos)) == 8
&& !cmp8(content, "<!--S-->"))
{
char *p, *q, b[1536]; cpy8(b, "********"); b[1535] = 0;
// inject the LINK tag of our content.css directly after the HEAD tag.
for (p = NULL, q = b+8; ((l += m = contread(q, 1, sizeof(b)-9, file, cache, &contpos)), m) && !(p = strcasestr(b+2, "<HEAD>")); cpy8(b, q+m-8), n += m)
memvcpy(content+n, q, m);
cpy8(b, q+m-8);
if (p)
{
if (p == q)
cpy6(content+n, p), p += 6, m -= 6, n += 6;
else if (p < q)
cpy6(content+n+(k = p-q), p), k += 6, p += 6, m -= k, n += k;
else // (p > q)
{
memvcpy(content+n, q, k = p-q), m -= k, n += k;
cpy6(content+n, p), p += 6, m -= 6, n += 6;
}
memvcpy(content+n,
"<LINK rel=\"stylesheet\" href=\"/edit/content.css\" type=\"text/css\">", 64); n += 64;
// inject the DIV marker tag of the editibale content directly after the <!--e--> tag.
if (!(p = strstr(q = p, "<!--e-->")))
{
memvcpy(content+n, q, m); n += m;
for (p = NULL; q = b+8, ((l += m = contread(q, 1, sizeof(b)-9, file, cache, &contpos)), m) && !(p = strstr(b, "<!--e-->")); cpy8(b, q+m-8), n += m)
memvcpy(content+n, q, m);
}
if (p)
{
if (p == q)
cpy8(content+n, p), p += 8, m -= 8, n += 8;
else if (p < q)
cpy8(content+n+(k = p-q), p), k += 8, p += 8, m -= k, n += k;
else // (p > q)
{
memvcpy(content+n, q, k = p-q), m -= k, n += k;
cpy8(content+n, p), p += 8, m -= 8, n += 8;
}
memvcpy(content+n, "<DIV data-editable data-name=\"content\">", 39); n += 39;
memvcpy(content+n, p, m); n += m;
if (!(l = filesize - l) || contread(content+n, l, 1, file, cache, &contpos) == 1)
{
n += l;
// inject the closing /DIV marker together with the SCRIPT tag of our content.js directly before the closing <!--E--> tag.
for (l = n-1; l >= 8; l--)
if (cmp8(content+l-8, "<!--E-->"))
break;
if (l >= 8)
{
intStr stamp;
k = (cache) ? int2str(stamp, time(NULL), intLen, 0) : 0;
for (l -= 8, m = n-l, p = content+l, q = content+l+((cache)?STAMP_DATA_LEN+k+CLOSE_DATA_LEN:0)+69, i = m-1; i >= 0; i--)
q[i] = p[i];
if (cache)
{
memvcpy(content+l, STAMP_DATA, STAMP_DATA_LEN); l += STAMP_DATA_LEN, n += STAMP_DATA_LEN;
memvcpy(content+l, stamp, k); l += k, n += k;
memvcpy(content+l, CLOSE_DATA, CLOSE_DATA_LEN); l += CLOSE_DATA_LEN, n += CLOSE_DATA_LEN;
}
memvcpy(content+l, "</DIV><SCRIPT type=\"text/javascript\" src=\"/edit/content.js\"></SCRIPT>", 69);
response->contlen = n += 69;
response->content = content;
rc = 200;
goto finish;
}
}
}
}
}
if (file)
rewind(file);
else // cache
contpos = 0;
}
if (contread(content, filesize, 1, file, cache, &contpos) == 1)
{
if (file)
httpETag(response->conttag, &st);
response->contlen = filesize;
response->content = content;
rc = 200;
}
finish:
if (rc == 200)
{
response->contdyn = true;
response->conttyp = (char *)extensionToType(entity, el);
}
else
deallocate(VPR(content), false);