[util] rename 'USERAGENT' to 'USERAGENT_GALLERYDL'

gallery_dl/extractor/danbooru.py

@@ -19,7 +19,7 @@ class DanbooruExtractor(BaseExtractor):
     page_limit = 1000
     page_start = None
     per_page = 200
-    useragent = util.USERAGENT
+    useragent = util.USERAGENT_GALLERYDL
     request_interval = (0.5, 1.5)
 
     def _init(self):

gallery_dl/extractor/e621.py

@@ -20,7 +20,7 @@ class E621Extractor(danbooru.DanbooruExtractor):
     page_limit = 750
     page_start = None
     per_page = 320
-    useragent = util.USERAGENT + " (by mikf)"
+    useragent = util.USERAGENT_GALLERYDL + " (by mikf)"
     request_interval_min = 1.0
 
     def items(self):

gallery_dl/extractor/mangadex.py

@@ -26,7 +26,7 @@ class MangadexExtractor(Extractor):
         "{manga}_c{chapter:>03}{chapter_minor}_{page:>03}.{extension}")
     archive_fmt = "{chapter_id}_{page}"
     root = "https://mangadex.org"
-    useragent = util.USERAGENT
+    useragent = util.USERAGENT_GALLERYDL
     _cache = {}
 
     def _init(self):

gallery_dl/extractor/weasyl.py

@@ -18,7 +18,7 @@ class WeasylExtractor(Extractor):
     filename_fmt = "{submitid} {title}.{extension}"
     archive_fmt = "{submitid}"
     root = "https://www.weasyl.com"
-    useragent = util.USERAGENT
+    useragent = util.USERAGENT_GALLERYDL
 
     def populate_submission(self, data):
         # Some submissions don't have content and can be skipped

gallery_dl/extractor/zerochan.py

@@ -26,7 +26,7 @@ class ZerochanExtractor(BooruExtractor):
     per_page = 200
     cookies_domain = ".zerochan.net"
     cookies_names = ("z_id", "z_hash")
-    useragent = util.USERAGENT
+    useragent = util.USERAGENT_GALLERYDL
     request_interval = (0.5, 1.5)
 
     def login(self):
@@ -173,7 +173,6 @@ class ZerochanTagExtractor(ZerochanExtractor):
             self.per_page = 24
         else:
             self.posts = self.posts_api
-            self.session.headers["User-Agent"] = util.USERAGENT
 
         if exts := self.config("extensions"):
             if isinstance(exts, str):

gallery_dl/util.py

@@ -716,7 +716,7 @@ EXTS_IMAGE = {"jpg", "jpeg", "png", "gif", "bmp", "svg", "psd", "ico",
 EXTS_VIDEO = {"mp4", "m4v", "mov", "webm", "mkv", "ogv", "flv", "avi", "wmv"}
 EXTS_ARCHIVE = {"zip", "rar", "7z", "tar", "gz", "bz2", "lzma", "xz"}
 
-USERAGENT = "gallery-dl/" + version.__version__
+USERAGENT_GALLERYDL = "gallery-dl/" + version.__version__
 USERAGENT_FIREFOX = (f"Mozilla/5.0 (Windows NT 10.0; Win64; x64; "
                      f"rv:{_ff_ver}.0) Gecko/20100101 Firefox/{_ff_ver}.0")
 USERAGENT_CHROME = ("Mozilla/5.0 (Windows NT 10.0; Win64; x64) "