diff --git a/.gitignore b/.gitignore index 36bb707b..8d4e8374 100644 --- a/.gitignore +++ b/.gitignore @@ -21,4 +21,6 @@ go.work brzaguza-bin -brzaguza.log \ No newline at end of file +brzaguza.log + +.vscode/* \ No newline at end of file diff --git a/go.mod b/go.mod index 61bb245a..43252b13 100644 --- a/go.mod +++ b/go.mod @@ -4,15 +4,33 @@ go 1.20 require ( github.com/alecthomas/kong v0.8.0 + github.com/gocolly/colly/v2 v2.1.0 github.com/natefinch/lumberjack v2.0.0+incompatible - github.com/rs/zerolog v1.29.1 + github.com/rs/zerolog v1.30.0 + golang.org/x/time v0.3.0 ) require ( github.com/BurntSushi/toml v1.3.2 // indirect + github.com/PuerkitoBio/goquery v1.8.1 // indirect + github.com/andybalholm/cascadia v1.3.2 // indirect + github.com/antchfx/htmlquery v1.3.0 // indirect + github.com/antchfx/xmlquery v1.3.17 // indirect + github.com/antchfx/xpath v1.2.4 // indirect + github.com/gobwas/glob v0.2.3 // indirect + github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect + github.com/golang/protobuf v1.5.3 // indirect + github.com/kennygrant/sanitize v1.2.4 // indirect github.com/mattn/go-colorable v0.1.13 // indirect github.com/mattn/go-isatty v0.0.19 // indirect + github.com/saintfish/chardet v0.0.0-20230101081208-5e3ef4b5456d // indirect + github.com/sourcegraph/conc v0.3.0 + github.com/temoto/robotstxt v1.1.2 // indirect + golang.org/x/net v0.12.0 // indirect golang.org/x/sys v0.10.0 // indirect + golang.org/x/text v0.11.0 // indirect + google.golang.org/appengine v1.6.7 // indirect + google.golang.org/protobuf v1.31.0 // indirect gopkg.in/natefinch/lumberjack.v2 v2.2.1 // indirect gopkg.in/yaml.v2 v2.4.0 // indirect ) diff --git a/go.sum b/go.sum index 8efcc051..d1117e22 100644 --- a/go.sum +++ b/go.sum @@ -1,12 +1,72 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU= github.com/BurntSushi/toml v1.3.2 h1:o7IhLm0Msx3BaB+n3Ag7L8EVlByGnpq14C4YWiu/gL8= github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ= +github.com/PuerkitoBio/goquery v1.5.1/go.mod h1:GsLWisAFVj4WgDibEWF4pvYnkVQBpKBKeU+7zCJoLcc= +github.com/PuerkitoBio/goquery v1.8.1 h1:uQxhNlArOIdbrH1tr0UXwdVFgDcZDrZVdcpygAcwmWM= +github.com/PuerkitoBio/goquery v1.8.1/go.mod h1:Q8ICL1kNUJ2sXGoAhPGUdYDJvgQgHzJsnnd3H7Ho5jQ= github.com/alecthomas/assert/v2 v2.1.0 h1:tbredtNcQnoSd3QBhQWI7QZ3XHOVkw1Moklp2ojoH/0= github.com/alecthomas/kong v0.8.0 h1:ryDCzutfIqJPnNn0omnrgHLbAggDQM2VWHikE1xqK7s= github.com/alecthomas/kong v0.8.0/go.mod h1:n1iCIO2xS46oE8ZfYCNDqdR0b0wZNrXAIAqro/2132U= github.com/alecthomas/repr v0.1.0 h1:ENn2e1+J3k09gyj2shc0dHr/yjaWSHRlrJ4DPMevDqE= +github.com/andybalholm/cascadia v1.1.0/go.mod h1:GsXiBklL0woXo1j/WYWtSYYC4ouU9PqHO0sqidkEA4Y= +github.com/andybalholm/cascadia v1.2.0/go.mod h1:YCyR8vOZT9aZ1CHEd8ap0gMVm2aFgxBp0T0eFw1RUQY= +github.com/andybalholm/cascadia v1.3.1/go.mod h1:R4bJ1UQfqADjvDa4P6HZHLh/3OxWWEqc0Sk8XGwHqvA= +github.com/andybalholm/cascadia v1.3.2 h1:3Xi6Dw5lHF15JtdcmAHD3i1+T8plmv7BQ/nsViSLyss= +github.com/andybalholm/cascadia v1.3.2/go.mod h1:7gtRlve5FxPPgIgX36uWBX58OdBsSS6lUvCFb+h7KvU= +github.com/antchfx/htmlquery v1.2.3/go.mod h1:B0ABL+F5irhhMWg54ymEZinzMSi0Kt3I2if0BLYa3V0= +github.com/antchfx/htmlquery v1.3.0 h1:5I5yNFOVI+egyia5F2s/5Do2nFWxJz41Tr3DyfKD25E= +github.com/antchfx/htmlquery v1.3.0/go.mod h1:zKPDVTMhfOmcwxheXUsx4rKJy8KEY/PU6eXr/2SebQ8= +github.com/antchfx/xmlquery v1.2.4/go.mod h1:KQQuESaxSlqugE2ZBcM/qn+ebIpt+d+4Xx7YcSGAIrM= +github.com/antchfx/xmlquery v1.3.17 h1:d0qWjPp/D+vtRw7ivCwT5ApH/3CkQU8JOeo3245PpTk= +github.com/antchfx/xmlquery v1.3.17/go.mod h1:Afkq4JIeXut75taLSuI31ISJ/zeq+3jG7TunF7noreA= +github.com/antchfx/xpath v1.1.6/go.mod h1:Yee4kTMuNiPYJ7nSNorELQMr1J33uOpXDMByNYhvtNk= +github.com/antchfx/xpath v1.1.8/go.mod h1:Yee4kTMuNiPYJ7nSNorELQMr1J33uOpXDMByNYhvtNk= +github.com/antchfx/xpath v1.2.3/go.mod h1:i54GszH55fYfBmoZXapTHN8T8tkcHfRgLyVwwqzXNcs= +github.com/antchfx/xpath v1.2.4 h1:dW1HB/JxKvGtJ9WyVGJ0sIoEcqftV3SqIstujI+B9XY= +github.com/antchfx/xpath v1.2.4/go.mod h1:i54GszH55fYfBmoZXapTHN8T8tkcHfRgLyVwwqzXNcs= +github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU= +github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw= github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc= +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= +github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4= +github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c= +github.com/gobwas/glob v0.2.3 h1:A4xDbljILXROh+kObIiy5kIaPYD8e96x1tgBhUI5J+Y= +github.com/gobwas/glob v0.2.3/go.mod h1:d3Ez4x06l9bZtSvzIay5+Yzi0fmZzPgnTbPcKjJAkT8= +github.com/gocolly/colly v1.2.0/go.mod h1:Hof5T3ZswNVsOHYmba1u03W65HDWgpV5HifSuueE0EA= +github.com/gocolly/colly/v2 v2.1.0 h1:k0DuZkDoCsx51bKpRJNEmcxcp+W5N8ziuwGaSDuFoGs= +github.com/gocolly/colly/v2 v2.1.0/go.mod h1:I2MuhsLjQ+Ex+IzK3afNS8/1qP3AedHOusRPcRdC5o0= github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA= +github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q= +github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc= +github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da h1:oI5xCqsCo564l8iNU+DwB5epxmsaqB+rhGL0m5jtYqE= +github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc= +github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A= +github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= +github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= +github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= +github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8= +github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA= +github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs= +github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w= +github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0= +github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8= +github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI= +github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk= +github.com/golang/protobuf v1.5.3 h1:KhyjKVUg7Usr/dYsdSqoFveMYd5ko72D+zANwlG1mmg= +github.com/golang/protobuf v1.5.3/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY= +github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M= +github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU= +github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU= +github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= +github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU= +github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE= github.com/hexops/gotextdiff v1.0.3 h1:gitA9+qJrrTCsiCl7+kh75nPqQt1cx4ZkudSTLoUqJM= +github.com/jawher/mow.cli v1.1.0/go.mod h1:aNaQlc7ozF3vw6IJ2dHjp2ZFiA4ozMIYY6PyuRJwlUg= +github.com/kennygrant/sanitize v1.2.4 h1:gN25/otpP5vAsO2djbMhF/LQX6R7+O1TB4yv8NzpJ3o= +github.com/kennygrant/sanitize v1.2.4/go.mod h1:LGsjYYtgxbetdg5owWB2mpgUL6e2nfw2eObZ0u0qvak= github.com/mattn/go-colorable v0.1.12/go.mod h1:u5H1YNBxpqRaxsYJYSkiCWKzEfiAb1Gb520KVy5xxl4= github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA= github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg= @@ -17,17 +77,136 @@ github.com/mattn/go-isatty v0.0.19/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D github.com/natefinch/lumberjack v2.0.0+incompatible h1:4QJd3OLAMgj7ph+yZTuX13Ld4UpgHp07nNdFX7mqFfM= github.com/natefinch/lumberjack v2.0.0+incompatible/go.mod h1:Wi9p2TTF5DG5oU+6YfsmYQpsTIOm0B1VNzQg9Mw6nPk= github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0= -github.com/rs/xid v1.4.0/go.mod h1:trrq9SKmegXys3aeAKXMUTdJsYXVwGY3RLcfgqegfbg= -github.com/rs/zerolog v1.29.1 h1:cO+d60CHkknCbvzEWxP0S9K6KqyTjrCNUy1LdQLCGPc= -github.com/rs/zerolog v1.29.1/go.mod h1:Le6ESbR7hc+DP6Lt1THiV8CQSdkkNrd3R0XbEgp3ZBU= +github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM= +github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= +github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA= +github.com/rs/xid v1.5.0/go.mod h1:trrq9SKmegXys3aeAKXMUTdJsYXVwGY3RLcfgqegfbg= +github.com/rs/zerolog v1.30.0 h1:SymVODrcRsaRaSInD9yQtKbtWqwsfoPcRff/oRXLj4c= +github.com/rs/zerolog v1.30.0/go.mod h1:/tk+P47gFdPXq4QYjvCmT5/Gsug2nagsFWBWhAiSi1w= +github.com/saintfish/chardet v0.0.0-20120816061221-3af4cd4741ca/go.mod h1:uugorj2VCxiV1x+LzaIdVa9b4S4qGAcH6cbhh4qVxOU= +github.com/saintfish/chardet v0.0.0-20230101081208-5e3ef4b5456d h1:hrujxIzL1woJ7AwssoOcM/tq5JjjG2yYOc8odClEiXA= +github.com/saintfish/chardet v0.0.0-20230101081208-5e3ef4b5456d/go.mod h1:uugorj2VCxiV1x+LzaIdVa9b4S4qGAcH6cbhh4qVxOU= +github.com/sourcegraph/conc v0.3.0 h1:OQTbbt6P72L20UqAkXXuLOj79LfEanQ+YQFNpLA9ySo= +github.com/sourcegraph/conc v0.3.0/go.mod h1:Sdozi7LEKbFPqYX2/J+iBAM6HpqSLTASQIKqDmF7Mt0= +github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= +github.com/stretchr/objx v0.2.0/go.mod h1:qt09Ya8vawLte6SNmTgCsAVtYtaKzEcn8ATUoHMkEqE= +github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI= +github.com/stretchr/testify v1.8.1 h1:w7B6lhMri9wdJUVmEZPGGhZzrYTPvgJArz7wNPgYKsk= +github.com/temoto/robotstxt v1.1.1/go.mod h1:+1AmkuG3IYkh1kv0d2qEB9Le88ehNO0zwOr3ujewlOo= +github.com/temoto/robotstxt v1.1.2 h1:W2pOjSJ6SWvldyEuiFXNxz3xZ8aiWX5LbfDiOFd7Fxg= +github.com/temoto/robotstxt v1.1.2/go.mod h1:+1AmkuG3IYkh1kv0d2qEB9Le88ehNO0zwOr3ujewlOo= +github.com/yuin/goldmark v1.4.13/go.mod 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h1:YD8tP3GAjkrDg1eZH7EGmyESg/lsYskCTPBJVb9jqSc= gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY= gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ= +gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA= +honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= +honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= diff --git a/src/cli.go b/src/cli.go index 91d05755..7a793bfa 100644 --- a/src/cli.go +++ b/src/cli.go @@ -19,6 +19,8 @@ var ( // flags Query string `type:"string" default:"${query_string}" env:"BRZAGUZA_QUERY" help:"Query string used for search"` + MaxPages int `type:"counter" default:"1" env:"BRZAGUZA_MAX_PAGES" help:"Number of pages to search"` + Visit bool `type:"bool" default:"false" env:"BRZAGUZA_VISIT" help:"Should results be visited"` Log string `type:"path" default:"${log_file}" env:"BRZAGUZA_LOG_FILE" help:"Log file path"` Verbosity int `type:"counter" default:"0" short:"v" env:"BRZAGUZA_VERBOSITY" help:"Log level verbosity"` } @@ -48,7 +50,7 @@ func setupCli() { Compact: true, }), kong.Vars{ - "version": fmt.Sprintf("%s (%s@%s)", Version, GitCommit, Timestamp), + "version": fmt.Sprintf("%v (%v@%v)", Version, GitCommit, Timestamp), "log_file": "brzaguza.log", "query_string": "cars for sale in Toronto, Canada", }, diff --git a/src/engines/google/google.go b/src/engines/google/google.go new file mode 100644 index 00000000..8b59fe15 --- /dev/null +++ b/src/engines/google/google.go @@ -0,0 +1,160 @@ +package google + +import ( + "context" + "fmt" + "net/url" + "strconv" + "strings" + + "github.com/gocolly/colly/v2" + "github.com/rs/zerolog/log" + "github.com/tminaorg/brzaguza/src/rank" + "github.com/tminaorg/brzaguza/src/search/limit" + "github.com/tminaorg/brzaguza/src/search/useragent" + "github.com/tminaorg/brzaguza/src/structures" +) + +const seURL string = "https://www.google.com/search?q=" +const resPerPage int = 10 + +func Search(ctx context.Context, query string, relay *structures.Relay, options *structures.Options) error { + if ctx == nil { + ctx = context.Background() + } //^ not necessary as ctx is always passed in search.go, branch predictor will skip this if + + if err := limit.RateLimit.Wait(ctx); err != nil { + return err + } + + if options.UserAgent == "" { + options.UserAgent = useragent.RandomUserAgent() + } + log.Trace().Msgf("%v", options.UserAgent) + + var col *colly.Collector + if options.MaxPages == 1 { + col = colly.NewCollector(colly.MaxDepth(1), colly.UserAgent(options.UserAgent)) // so there is no thread creation overhead + } else { + col = colly.NewCollector(colly.MaxDepth(1), colly.UserAgent(options.UserAgent), colly.Async(true)) + } + pagesCol := colly.NewCollector(colly.MaxDepth(1), colly.UserAgent(options.UserAgent), colly.Async(true)) + + var retError error + + pagesCol.OnRequest(func(r *colly.Request) { + if err := ctx.Err(); err != nil { // dont fully understand this + r.Abort() + retError = err + return + } + r.Ctx.Put("originalURL", r.URL.String()) + }) + + pagesCol.OnError(func(r *colly.Response, err error) { + retError = err + }) + + pagesCol.OnResponse(func(r *colly.Response) { + urll := r.Ctx.Get("originalURL") + + setResultResponse(urll, r, relay) + }) + + col.OnRequest(func(r *colly.Request) { + if err := ctx.Err(); err != nil { // dont fully understand this + r.Abort() + retError = err + return + } + }) + + col.OnError(func(r *colly.Response, err error) { + retError = err + }) + + var pageRankCounter []int = make([]int, options.MaxPages*resPerPage) + + col.OnHTML("div.g", func(e *colly.HTMLElement) { + dom := e.DOM + + linkHref, _ := dom.Find("a").Attr("href") + linkText := strings.TrimSpace(linkHref) + titleText := strings.TrimSpace(dom.Find("div > div > div > a > h3").Text()) + descText := strings.TrimSpace(dom.Find("div > div > div > div:first-child > span:first-child").Text()) + + if linkText != "" && linkText != "#" && titleText != "" { + pageNum := getPageNum(e.Request.URL.String()) + res := structures.Result{ + Rank: -1, + SEPageRank: pageRankCounter[pageNum], + SEPage: pageNum, + URL: linkText, + Title: titleText, + Description: descText, + } + pageRankCounter[pageNum]++ + + setResult(&res, relay, options, pagesCol) + } + }) + + col.Visit(seURL + query + "&start=0") + for i := 1; i < options.MaxPages; i++ { + col.Visit(seURL + query + "&start=" + strconv.Itoa(i*10)) + } + + col.Wait() + pagesCol.Wait() + + return retError +} + +func setResult(result *structures.Result, relay *structures.Relay, options *structures.Options, pagesCol *colly.Collector) { + log.Trace().Msgf("Got Result %v: %v", result.Title, result.URL) + + relay.Mutex.Lock() + mapRes, exists := relay.ResultMap[result.URL] + + if !exists { + relay.ResultMap[result.URL] = result + } else if len(mapRes.Description) < len(result.Description) { + mapRes.Description = result.Description + } + relay.Mutex.Unlock() + + if !exists && options.VisitPages { + pagesCol.Visit(result.URL) + } +} + +func setResultResponse(link string, response *colly.Response, relay *structures.Relay) { + log.Trace().Msgf("Got Response %v", link) + + relay.Mutex.Lock() + mapRes, exists := relay.ResultMap[link] + + if !exists { + log.Error().Msgf("URL not in map when adding response! Should not be possible. URL: %v", link) + relay.Mutex.Unlock() + return + } + + mapRes.Response = response + + resCopy := *mapRes + rankAddr := &(mapRes.Rank) + relay.Mutex.Unlock() + rank.SetRank(&resCopy, rankAddr, &(relay.Mutex)) //copy contains pointer to response +} + +func getPageNum(uri string) int { + urll, err := url.Parse(uri) + if err != nil { + fmt.Println(err) + } + qry := urll.Query() + startString := qry.Get("start") + startInt, _ := strconv.Atoi(startString) + return startInt / 10 +} diff --git a/src/main.go b/src/main.go index e15a360e..0d7f9dbb 100644 --- a/src/main.go +++ b/src/main.go @@ -1,6 +1,35 @@ package main +import ( + "fmt" + "time" + + "github.com/rs/zerolog/log" + "github.com/tminaorg/brzaguza/src/search" + "github.com/tminaorg/brzaguza/src/structures" +) + +func printResults(results []structures.Result) { + for _, r := range results { + fmt.Printf("%v -----\n\t\"%v\"\n\t\"%v\"\n\t\"%v\"\n", r.Rank, r.Title, r.URL, r.Description) + } +} + func main() { setupCli() setupLog() + + log.Info(). + Str("query", cli.Query). + Str("max-pages", fmt.Sprintf("%v", cli.MaxPages)). + Str("visit", fmt.Sprintf("%v", cli.Visit)). + Msg("Started searching") + + start := time.Now() + results := search.PerformSearch(cli.Query, cli.MaxPages, cli.Visit) + duration := time.Since(start) + + printResults(results) + log.Info(). + Msg(fmt.Sprintf("Found %v results in %vms", len(results), duration.Milliseconds())) } diff --git a/src/rank/rank.go b/src/rank/rank.go new file mode 100644 index 00000000..aa3624ae --- /dev/null +++ b/src/rank/rank.go @@ -0,0 +1,29 @@ +package rank + +import ( + "sync" + + "github.com/rs/zerolog/log" + "github.com/tminaorg/brzaguza/src/structures" +) + +// TLDR: you must mutex.Lock when changing *rankAddr, you probably dont need to mutex.RLock() when reading result +// (in reality even *rankAddr shouldnt need a lock, but go would definately complain about simultanious read/write because of it) +func SetRank(result *structures.Result, rankAddr *int, mutex *sync.RWMutex) { + + //mutex.RLock() + reqUrl := result.Response.Request.URL.String() //dummy code, if error here, uncomment lock + //mutex.RUnlock() + + if reqUrl != result.URL { //dummy code + log.Trace().Msg("Request URL not same as result.URL \\/") + } + + rrank := result.SEPage*100 + result.SEPageRank + + mutex.Lock() + *rankAddr = rrank + mutex.Unlock() + + log.Trace().Msgf("Set rank to %v for %v: %v", rrank, result.Title, result.URL) +} diff --git a/src/search/limit/limit.go b/src/search/limit/limit.go new file mode 100644 index 00000000..967c212e --- /dev/null +++ b/src/search/limit/limit.go @@ -0,0 +1,18 @@ +package limit + +import ( + "errors" + + "golang.org/x/time/rate" +) + +// ErrRateLimited indicates that you have been detected of scraping and temporarily blocked. +// The duration of the block is unspecified. +var ErrRateLimited = errors.New("ratelimited") + +// RateLimit sets a global limit to how many requests can be made in a given time interval. +// The default is unlimited (but obviously you will get blocked temporarily if you do too many +// calls too quickly). +// +// See: https://godoc.org/golang.org/x/time/rate#NewLimiter +var RateLimit = rate.NewLimiter(rate.Inf, 0) diff --git a/src/search/search.go b/src/search/search.go new file mode 100644 index 00000000..97a45fd5 --- /dev/null +++ b/src/search/search.go @@ -0,0 +1,55 @@ +package search + +import ( + "context" + "sort" + "strings" + + "github.com/rs/zerolog/log" + "github.com/sourcegraph/conc" + "github.com/tminaorg/brzaguza/src/engines/google" + "github.com/tminaorg/brzaguza/src/structures" +) + +func cleanQuery(query string) string { + return strings.Replace(strings.Trim(query, " "), " ", "+", -1) +} + +func PerformSearch(query string, maxPages int, visitPages bool) []structures.Result { + relay := structures.Relay{ + ResultMap: make(map[string]*structures.Result), + EngineDoneChannel: make(chan bool), + } + + options := structures.Options{ + MaxPages: maxPages, + VisitPages: visitPages, + } + + query = cleanQuery(query) + + var worker conc.WaitGroup + + worker.Go(func() { + err := google.Search(context.Background(), query, &relay, &options) + if err != nil { + log.Error().Err(err).Msg("Failed searching google.com") + } + }) + + worker.Wait() + + var results []structures.Result = make([]structures.Result, 0, len(relay.ResultMap)) + for _, res := range relay.ResultMap { + results = append(results, *res) + } + + sort.Sort(structures.ByRank(results)) + + log.Debug().Msg("All processing done, waiting for closing of goroutines.") + worker.Wait() + + log.Debug().Msg("Done! Received All Engines!") + + return results +} diff --git a/src/search/useragent/useragent.go b/src/search/useragent/useragent.go new file mode 100644 index 00000000..1d28377e --- /dev/null +++ b/src/search/useragent/useragent.go @@ -0,0 +1,24 @@ +package useragent + +import ( + "math/rand" + "time" +) + +// lowercase private list of user agents +var defaultUserAgentList = [...]string{ + // Chrome: Windows, MacOS, Linux, Android + "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/113.0.0.0 Safari/537.36", + "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36", + "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36", + // Edge: Windows + "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36 Edg/114.0.0.0", + // Firefox: Windows + "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/113.0", +} + +func RandomUserAgent() string { + randSrc := rand.NewSource(time.Now().UnixNano()) + randGen := rand.New(randSrc) + return defaultUserAgentList[randGen.Intn(len(defaultUserAgentList))] +} diff --git a/src/structures/structures.go b/src/structures/structures.go new file mode 100644 index 00000000..25a83c94 --- /dev/null +++ b/src/structures/structures.go @@ -0,0 +1,52 @@ +package structures + +import ( + "sync" + + "github.com/gocolly/colly/v2" +) + +type Relay struct { + ResultMap map[string]*Result + Mutex sync.RWMutex + EngineDoneChannel chan bool +} + +type DOMPaths struct { + ResultsContainer string + Result string // div + Link string // a href + Title string // heading + Description string // paragraph + NextPage string // button +} + +type Options struct { + UserAgent string + MaxPages int + ProxyAddr string + JustFirstPage bool + VisitPages bool +} + +type Result struct { + URL string + Rank int + SEPageRank int + SEPage int + Title string + Description string + Response *colly.Response +} + +/* +func (r Result) Hash() string { + return r.URL +} +*/ + +type ByRank []Result + +func (r ByRank) Len() int { return len(r) } +func (r ByRank) Swap(i, j int) { r[i], r[j] = r[j], r[i] } +func (r ByRank) Less(i, j int) bool { return r[i].Rank < r[j].Rank }